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>
diff --git a/arch/arm/common/Kconfig b/arch/arm/common/Kconfig
index cf82a88..6382566 100644
--- a/arch/arm/common/Kconfig
+++ b/arch/arm/common/Kconfig
@@ -48,12 +48,11 @@
 	bool "FIQ Mode Serial Debugger"
 	select FIQ
 	select FIQ_GLUE
-	select KERNEL_DEBUGGER_CORE
 	default n
 	help
 	  The FIQ serial debugger can accept commands even when the
 	  kernel is unresponsive due to being stuck with interrupts
-	  disabled.  Depends on the kernel debugger core in drivers/misc.
+	  disabled.
 
 
 config FIQ_DEBUGGER_NO_SLEEP