disp: msm: add changes for bengal target compilation

This change corrects the definitions of functions
invoked when their config keys are not enabled.

Change-Id: Iba4631b8019a5e5a6b95516c5c9f9e28942e60c9
Signed-off-by: Jayaprakash <jmadiset@codeaurora.org>

msm/msm_drv.c

@@ -2024,16 +2024,6 @@ static struct platform_driver msm_platform_driver = {
 	},
 };
 
-#ifdef CONFIG_QCOM_KGSL
-void __init adreno_register(void)
-{
-}
-
-void __exit adreno_unregister(void)
-{
-}
-#endif
-
 static int __init msm_drm_register(void)
 {
 	if (!modeset)
@@ -2044,7 +2034,6 @@ static int __init msm_drm_register(void)
 	msm_dsi_register();
 	msm_edp_register();
 	msm_hdmi_register();
-	adreno_register();
 	return platform_driver_register(&msm_platform_driver);
 }
 
@@ -2053,7 +2042,6 @@ static void __exit msm_drm_unregister(void)
 	DBG("fini");
 	platform_driver_unregister(&msm_platform_driver);
 	msm_hdmi_unregister();
-	adreno_unregister();
 	msm_edp_unregister();
 	msm_dsi_unregister();
 	msm_smmu_driver_cleanup();