ARM: common: fiq_debugger: add irq context debug functions

This code is moved here from the drivers/misc/kernel_debugger.

Change-Id: Iccf21c4313a8516a917125ca93f64baa5f354228
Signed-off-by: Dima Zavin <dima@android.com>
ARM: common: fiq_debugger: dump sysrq directly to console if enabled

If the fiq console is enabled, then don't filter the console output
while sysrq command is in progress.

Change-Id: I9389d757373a5fdca5cbf61f0723667510d3ae88
Revert "[ARM] fiq_debugger: Print local timer irqs count"

This reverts commit 0210691e808a6ba3479bd04ef15cfae6ea28c4d4.