msm: kgsl: 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. This removes the need to
specify a unique regulator_name in struct kgsl_pwrctrl.

Change-Id: I6f6c299d5ad39b8b5b24a465ecabab484ea6d18e
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_pwrctrl.c b/drivers/gpu/msm/kgsl_pwrctrl.c
index 6fa7da2..15a0252 100644
--- a/drivers/gpu/msm/kgsl_pwrctrl.c
+++ b/drivers/gpu/msm/kgsl_pwrctrl.c
@@ -522,7 +522,7 @@
 		clk_set_rate(pwr->grp_clks[0], pwr->
 				pwrlevels[pwr->num_pwrlevels - 1].gpu_freq);
 
-	pwr->gpu_reg = regulator_get(NULL, pwr->regulator_name);
+	pwr->gpu_reg = regulator_get(&pdev->dev, "vdd");
 	if (IS_ERR(pwr->gpu_reg))
 		pwr->gpu_reg = NULL;