Staging: android: add lowmemorykiller driver

From: San Mehat <san@android.com>
Cc: Brian Swetland <swetland@google.com>
Cc: Robert Love <rlove@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc drivers/staging/android/Kconfig
Simple merge

diff --cc drivers/staging/android/Makefile
Simple merge

diff --cc drivers/staging/android/lowmemorykiller.c
Simple merge