msm: camera: Convert VPE into platform device

Make VPE platform devices as well as
v4l2 sub-devices. They are created at system boot-up,
and registered during camera open.

The subdevices are decoupled from the v4l2 devices by
using device model APIs to find and register them.

Change-Id: I884b38f714df6f101d48b38219d274bf91fef4c6
Signed-off-by: Kevin Chan <ktchan@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-msm8960.c b/arch/arm/mach-msm/board-msm8960.c
index a7cc933..8145d6b 100644
--- a/arch/arm/mach-msm/board-msm8960.c
+++ b/arch/arm/mach-msm/board-msm8960.c
@@ -1426,6 +1426,7 @@
 	platform_device_register(&msm8960_device_csid1);
 	platform_device_register(&msm8960_device_ispif);
 	platform_device_register(&msm8960_device_vfe);
+	platform_device_register(&msm8960_device_vpe);
 }
 #endif