logger: Make CC_DESC string length indivisible by four

When variable length array, filled with string will be
placed in sucha manner that null terminator address will
be divisible by four, then it will be lost in output
binary file. It leads to troubles during scanning content
of such a section. Such a problem occur in firmware
and produce logger and FW debug ABI mismatch and it's why
logger output is broken.
After change length of XCC_TOOLS_VERSION to be none of
number four multiplication problem with logger disappear.

Signed-off-by: Karol Trzcinski <karolx.trzcinski@linux.intel.com>

Author: ktrzcinx

scripts/cmake/xtensa-toolchain.cmake

@@ -81,3 +81,9 @@ if(XCC)
 else()
 	string(REGEX MATCH "([^\/\\]+)$" XCC_TOOLS_VERSION "${TOOLCHAIN}")
 endif()
+
+string(LENGTH "${XCC_TOOLS_VERSION}" XCC_TOOLS_VERSION_STR_LEN)
+math(EXPR XCC_TOOLS_VERSION_PADDING "(${XCC_TOOLS_VERSION_STR_LEN} + 1) % 4")
+if(XCC_TOOLS_VERSION_PADDING EQUAL 0)
+	set(XCC_TOOLS_VERSION "<${XCC_TOOLS_VERSION}>")
+endif()