Fix -Wasm-operand-widths warnings

icv_platform_macros.h was getting included in arm64 builds from common/arm folder
instead of common/arm64. This was because ideint_function_selector*.c files are
present in common/arm. The inline assembly in common/arm/platform_macros.h is for
arm and not for arm64 and hence there were few warnings.

Since ideint_function_selector*.c files do not really need platform_macros.h,
by not including these files warnings are resolved.

Bug: 28027910
Change-Id: I2fec3b51b84bae681115314e7436586dc8d3add6
3 files changed