ID_ISAR0[31..28] bits are RES0 in ARMv8, Reserved/UNK in ARMv7. Currently
these bits get exposed through generic_id_ftr32[] which is not desirable.
Hence define an explicit ftr_id_isar0[] array for ID_ISAR0 register where
those bits can be hidden.
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Cc: Suzuki K Poulose <suzuki.poulose@xxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>