Export read_current_timer()

This fixes the following error (reveals if CONFIG_ARM_ARCH_TIMER=y):
  Building modules, stage 2.
  MODPOST 1106 modules
ERROR: "read_current_timer" [drivers/video/udlfb.ko] undefined!
ERROR: "read_current_timer" [drivers/gpu/drm/udl/udl.ko] undefined!
ERROR: "read_current_timer" [crypto/tcrypt.ko] undefined!

Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
1 file changed