msm_fb: Pass device pointers to regulator_get()

Passing a device pointer instead of NULL as the first argument
to regulator_get() allows the device to be taken into account
when finding a matching regulator.

Change-Id: Idc9990eff2c6c78fc9fc9a36d638eef4fd1b632a
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
diff --git a/arch/arm/mach-msm/devices-msm7x30.c b/arch/arm/mach-msm/devices-msm7x30.c
index 7999ab8..489c32d 100644
--- a/arch/arm/mach-msm/devices-msm7x30.c
+++ b/arch/arm/mach-msm/devices-msm7x30.c
@@ -1347,7 +1347,7 @@
 struct platform_device *msm_footswitch_devices[] = {
 	FS_PCOM(FS_GFX2D0, "vdd", "kgsl-2d0.0"),
 	FS_PCOM(FS_GFX3D,  "vdd", "kgsl-3d0.0"),
-	FS_PCOM(FS_MDP,    "fs_mdp",    NULL),
+	FS_PCOM(FS_MDP,    "vdd", "mdp.0"),
 	FS_PCOM(FS_MFC,    "fs_mfc",    NULL),
 	FS_PCOM(FS_ROT,    "fs_rot",    NULL),
 	FS_PCOM(FS_VFE,    "fs_vfe",    NULL),