UPSTREAM: arm64: mm: Rename post_ttbr0_update_workaround

UPSTREAM: arm64: mm: Rename post_ttbr0_update_workaround

The post_ttbr0_update_workaround hook applies to any change to TTBRx_EL1.
Since we're using TTBR1 for the ASID, rename the hook to make it clearer
as to what it's doing.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Tested-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
(cherry picked from commit 158d495899ce55db453f682a8ac8390d5a426578)

[toddpoynor@google.com: fixup context conflict in comments]
Change-Id: Ia0f82eee78ad442d1773245b99c7534f0ea066e4
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>