KSAPI: Performance monitoring tool for Snapdragon linux

KSAPI records performance statistics for Snapdragon linux platform.
It uses the /proc FS as a means to exchange configuration data and counter
statistics. It can monitor the counter statistics for Scorpion processor
supported hardware performance counters on a per thread basis or AXI
counters on an overall system basis.

Change-Id: Iaaf51db68dbd6d5a55fe34328d041bde5015230d
Signed-off-by: Sheetal Sahasrabudhe <sheetals@codeaurora.org>
(cherry picked from commit 4e6bb52bcee479762f283b4a44a1bdd4f1277aa2)

Conflicts:

	arch/arm/Kconfig