feat: skip TRBE extension test if ERRATA applies

For Cortex-A520(2938996) and Cortex-X4(2726228) erratums TRBE feature is
disabled by EL3.

Check and skip TRBE test if the core is affected.

Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: Iaa394ae79dec38d0b369012e149abbc65b0cf0f8
1 file changed