UPSTREAM: arm64: tlbflush.h: add __tlbi() macro

As with dsb() and isb(), add a __tlbi() helper so that we can avoid
distracting asm boilerplate every time we want a TLBI. As some TLBI
operations take an argument while others do not, some pre-processor is
used to handle these two cases with different assembly blocks.

The existing tlbflush.h code is moved over to use the helper.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
[ rename helper to __tlbi, update comment and commit log ]
Signed-off-by: Punit Agrawal <punit.agrawal@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
(cherry picked from commit db68f3e7594aca77632d56c449bd36c6c931d59a)
Signed-off-by: Greg Hackmann <ghackmann@google.com>
Change-Id: I9fc215c78f2ae648e4df6ba7189cec7e453800e4
Git-Commit: e0c5ba8c
Git-repo: git://android.googlesource.com/kernel/common.git


[vinmenon@codeaurora.org: trivial merge conflicts]
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>