kconfig: Make VIRTUAL_HEAP default n for ACE to fix multi core DP

Fix multi core data processing domain component issues by disabling
virtual heap and resorting to more robust Zephyr allocation method.

This is a temporary remedy to the problem until a better solution is
found.

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>

Author: Jyri Sarha

zephyr/Kconfig

@@ -94,7 +94,6 @@ config SOF_ZEPHYR_NO_SOF_CLOCK
 
 config VIRTUAL_HEAP
 	bool "Use virtual memory heap to allocate a buffers"
-	default y if ACE
 	default n
 	depends on ACE
 	help