Revert "msm: bam_dmux: remove clock voting"

This reverts commit c1f9d33c4b5ea216fe24175b941236d9ff67c259.

Change-Id: Ifdbe433afa4d2c755c2f76513a7c53bab6a46021
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
diff --git a/arch/arm/mach-msm/bam_dmux.c b/arch/arm/mach-msm/bam_dmux.c
index c2414fe..45f1033 100644
--- a/arch/arm/mach-msm/bam_dmux.c
+++ b/arch/arm/mach-msm/bam_dmux.c
@@ -1090,10 +1090,16 @@
 
 static void vote_dfab(void)
 {
+	int rc;
+
+	rc = clk_enable(dfab_clk);
+	if (rc)
+		pr_err("bam_dmux vote for dfab failed rc = %d\n", rc);
 }
 
 static void unvote_dfab(void)
 {
+	clk_disable(dfab_clk);
 }
 
 static int restart_notifier_cb(struct notifier_block *this,