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-8930.c b/arch/arm/mach-msm/board-8930.c
index 41074d1..3b89a32 100644
--- a/arch/arm/mach-msm/board-8930.c
+++ b/arch/arm/mach-msm/board-8930.c
@@ -1538,6 +1538,7 @@
 	&msm_8960_q6_lpass,
 	&msm_8960_q6_mss_fw,
 	&msm_8960_q6_mss_sw,
+	&msm_8960_riva,
 	&msm8960_device_qup_spi_gsbi1,
 	&msm8960_device_qup_i2c_gsbi3,
 	&msm8960_device_qup_i2c_gsbi4,