IFS uses 'scan test images' provided by Intel that can be regarded as
firmware. IFS test image carries microcode header with extended signature
table.
Expose find_matching_signature() for verifying if the test image
header or the extended signature table indicate whether an IFS test image
is fit to run on a system. Move the function to cpu/intel.c and
add intel_ prefix to the function name.
No functional change
Reviewed-by: Tony Luck <tony.luck@xxxxxxxxx>
Reviewed-by: Ashok Raj <ashok.raj@xxxxxxxxx>
Signed-off-by: Jithu Joseph <jithu.joseph@xxxxxxxxx>