arm64: prevent potential circular header dependencies in asm/bug.h

arm64: prevent potential circular header dependencies in asm/bug.h

Currently, using BUG_ON() in header files is cumbersome, due to the fact
that asm/bug.h transitively includes a lot of other header files, resulting
in the actual BUG_ON() invocation appearing before its definition in the
preprocessor input. So let's reverse the #include dependency between
asm/bug.h and asm/debug-monitors.h, by moving the definition of BUG_BRK_IMM
from the latter to the former. Also fix up one user of asm/debug-monitors.h
which relied on a transitive include.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 03336b1df9929e5d9c28fd9768948b6151cb046c)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Conflicts:
	skip arch/arm64/kvm/hyp/debug-sr.c