arm64: debug: make aarch32 bkpt checking endian clean
The current breakpoint instruction checking code for A32 is not endian clean. Fix this with appropriate byte-swapping when retrieving instructions. Signed-off-by: NMatthew Leach <matthew.leach@arm.com> Reviewed-by: NWill Deacon <will.deacon@arm.com> Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com>
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