arm64: entry: Fix the typo in the comment of el1_dbg()

The function name should be local_daif_mask().

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Mark Rutlamd <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20200417103212.45812-2-haokexin@gmail.com


Signed-off-by: Will Deacon <will@kernel.org>