ARM: kprobes: Add kprobes-common.c

This file will contain the instruction decoding and emulation code
which is common to both ARM and Thumb instruction sets.

For now, we will just move over condition_checks from kprobes-arm.c
This table is also renamed to kprobe_condition_checks to avoid polluting
the public namespace with a too generic name.

Signed-off-by: Jon Medhurst <tixy@yxit.co.uk>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>

arch/arm/kernel/kprobes.h

@@ -34,4 +34,6 @@ enum kprobe_insn arm_kprobe_decode_insn(kprobe_opcode_t,
 
 void __init arm_kprobe_decode_init(void);
 
+extern kprobe_check_cc * const kprobe_condition_checks[16];
+
 #endif /* _ARM_KERNEL_KPROBES_H */