msm: kgsl: Export some kgsl-core functions to EXPORT_SYMBOLS

Export some functions in the KGSL core driver so they can
be seen by the leaf drivers.

Change-Id: Ic0dedbad5dbe562c2e674f8e885a3525b6feac7b
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_pwrctrl.c b/drivers/gpu/msm/kgsl_pwrctrl.c
index 9d4c245..a9cda0a 100644
--- a/drivers/gpu/msm/kgsl_pwrctrl.c
+++ b/drivers/gpu/msm/kgsl_pwrctrl.c
@@ -1059,6 +1059,7 @@
 
 	mutex_unlock(&device->mutex);
 }
+EXPORT_SYMBOL(kgsl_idle_check);
 
 void kgsl_timer(unsigned long data)
 {