FROMGIT: KVM: arm64: Correct spelling of DBGDIDR register

The aarch32 debug ID register is called DBG*D*IDR (emphasis added), not
DBGIDR, use the correct spelling.

Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20210128132823.35067-1-alexandru.elisei@arm.com
(cherry picked from commit 8c358b29
 git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git

 next)
Signed-off-by: Will Deacon <willdeacon@google.com>
Change-Id: I6864d95731f41bb714c327382cb0c7eac4e5c05e
Bug: 178098380
Test: atest VirtualizationHostTestCases on an EL2-enabled device