oprofile: Add Oprofile kernel driver support

This commit enables Oprofile on Scorpion and Scorpion-MP based
chips. It only adds the generic arm performance monitors.
It also adds necessary support to all the underlying perf
components.

Change-Id: I525f35097595b3c4c9c94f9bbb47e4209edf5ddb
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
(cherry picked from commit b014badff96a5915218d8e7e0d99906976264a58)

Conflicts:

	arch/arm/include/asm/perf_event.h
	arch/arm/kernel/perf_event.c
	arch/arm/mach-msm/Makefile