msm: pil-8960: Break off Riva support into separate driver

Implement the Riva boot and shutdown support as a platform
driver.

Change-Id: I4d9227009b817f2f4b530ebf1eecfb3d8844dd58
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-8960.c b/arch/arm/mach-msm/board-8960.c
index 9c6cd9b..bc9a2ba 100644
--- a/arch/arm/mach-msm/board-8960.c
+++ b/arch/arm/mach-msm/board-8960.c
@@ -1745,6 +1745,7 @@
 	&msm_8960_q6_lpass,
 	&msm_8960_q6_mss_fw,
 	&msm_8960_q6_mss_sw,
+	&msm_8960_riva,
 	&msm8960_device_otg,
 	&msm8960_device_gadget_peripheral,
 	&msm_device_hsusb_host,