pipe-demux-eq-iir-playback: support eq coef customization

Topology file could use PIPELINE_FILTER1 macro to include a m4 file
with eq coefficient. If macro is not defined, eq_iir_coef_bandsplit.m4
will be included.

Signed-off-by: Brent Lu <brent.lu@intel.com>

Author: brentlu

tools/topology/topology1/m4/eq_iir_coef_bandsplit.m4

@@ -0,0 +1,29 @@
+# Bandsplit, created with example_iir_bandsplit.m 26-Oct-2021
+CONTROLBYTES_PRIV(DEF_EQIIR_PRIV,
+`       bytes "0x53,0x4f,0x46,0x00,0x00,0x00,0x00,0x00,'
+`       0xb0,0x00,0x00,0x00,0x01,0x20,0x01,0x03,'
+`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
+`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
+`       0xb0,0x00,0x00,0x00,0x04,0x00,0x00,0x00,'
+`       0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
+`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
+`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
+`       0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,'
+`       0x01,0x00,0x00,0x00,0x02,0x00,0x00,0x00,'
+`       0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
+`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
+`       0x00,0x00,0x00,0x00,0x50,0xda,0xf0,0xc0,'
+`       0x1e,0x5d,0x0d,0x7f,0x3c,0xdf,0xd6,0x1f,'
+`       0x89,0x41,0x52,0xc0,0x3c,0xdf,0xd6,0x1f,'
+`       0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,'
+`       0x2d,0x3a,0xcd,0xd3,0xc0,0xf5,0x82,0x68,'
+`       0xb9,0x41,0x76,0x00,0x72,0x83,0xec,0x00,'
+`       0xb9,0x41,0x76,0x00,0xff,0xff,0xff,0xff,'
+`       0x99,0x7f,0x00,0x00,0x01,0x00,0x00,0x00,'
+`       0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
+`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
+`       0x00,0x00,0x00,0x00,0x2d,0x3a,0xcd,0xd3,'
+`       0xc0,0xf5,0x82,0x68,0x01,0xe1,0xa6,0x1a,'
+`       0xff,0x3d,0xb2,0xca,0x01,0xe1,0xa6,0x1a,'
+`       0x00,0x00,0x00,0x00,0xb2,0x7f,0x00,0x00"'
+)

tools/topology/topology1/sof/pipe-demux-eq-iir-playback.m4

@@ -23,35 +23,9 @@ C_CONTROLBYTES(concat(`DEMUX', PIPELINE_ID), PIPELINE_ID,
 define(DEF_EQIIR_COEF, concat(`eqiir_coef_', PIPELINE_ID))
 define(DEF_EQIIR_PRIV, concat(`eqiir_priv_', PIPELINE_ID))
 
-# Bandsplit, created with example_iir_bandsplit.m 26-Oct-2021
-CONTROLBYTES_PRIV(DEF_EQIIR_PRIV,
-`       bytes "0x53,0x4f,0x46,0x00,0x00,0x00,0x00,0x00,'
-`       0xb0,0x00,0x00,0x00,0x01,0x20,0x01,0x03,'
-`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
-`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
-`       0xb0,0x00,0x00,0x00,0x04,0x00,0x00,0x00,'
-`       0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
-`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
-`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
-`       0x00,0x00,0x00,0x00,0x01,0x00,0x00,0x00,'
-`       0x01,0x00,0x00,0x00,0x02,0x00,0x00,0x00,'
-`       0x02,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
-`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
-`       0x00,0x00,0x00,0x00,0x50,0xda,0xf0,0xc0,'
-`       0x1e,0x5d,0x0d,0x7f,0x3c,0xdf,0xd6,0x1f,'
-`       0x89,0x41,0x52,0xc0,0x3c,0xdf,0xd6,0x1f,'
-`       0x00,0x00,0x00,0x00,0x00,0x40,0x00,0x00,'
-`       0x2d,0x3a,0xcd,0xd3,0xc0,0xf5,0x82,0x68,'
-`       0xb9,0x41,0x76,0x00,0x72,0x83,0xec,0x00,'
-`       0xb9,0x41,0x76,0x00,0xff,0xff,0xff,0xff,'
-`       0x99,0x7f,0x00,0x00,0x01,0x00,0x00,0x00,'
-`       0x01,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
-`       0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,'
-`       0x00,0x00,0x00,0x00,0x2d,0x3a,0xcd,0xd3,'
-`       0xc0,0xf5,0x82,0x68,0x01,0xe1,0xa6,0x1a,'
-`       0xff,0x3d,0xb2,0xca,0x01,0xe1,0xa6,0x1a,'
-`       0x00,0x00,0x00,0x00,0xb2,0x7f,0x00,0x00"'
-)
+# define filter. eq_iir_coef_bandsplit.m4 is set by default
+ifdef(`PIPELINE_FILTER1', , `define(PIPELINE_FILTER1, eq_iir_coef_bandsplit.m4)')
+include(PIPELINE_FILTER1)
 
 C_CONTROLBYTES(DEF_EQIIR_COEF, PIPELINE_ID,
 	CONTROLBYTES_OPS(bytes, 258 binds the control to bytes get/put handlers, 258, 258),