FROMLIST: asm-generic/io: Add logging support for MMIO accessors

Add logging support for MMIO high level accessors such as read{b,w,l,q}
and their relaxed versions to aid in debugging unexpected crashes/hangs
caused by the corresponding MMIO operation. Also add a generic flag
(__DISABLE_TRACE_MMIO__) which is used to disable MMIO tracing in nVHE KVM
and if required can be used to disable MMIO tracing for specific drivers.

Bug: 169045115
Link: https://lore.kernel.org/lkml/e64a532ce10e88269b1e8550293e07ea669c5f73.1638858747.git.quic_saipraka@quicinc.com/


Change-Id: I861e9d351cc2660051a40f36b391609c06aabb99
Signed-off-by: Sai Prakash Ranjan <quic_saipraka@quicinc.com>
Signed-off-by: Vamsi Krishna Lanka <quic_vamslank@quicinc.com>