usb: msm_otg: Migrate to clock apis for XO voting

Use the clock APIs instead of the msm_xo APIs to vote on CXO.
This removes one more msm specific api from this driver and will
allow us to move XO control into the rpm clock driver.

Change-Id: Ie9344aad20651002e98f13cd3adb39680fbd93bd
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/arch/arm/mach-msm/clock-8960.c b/arch/arm/mach-msm/clock-8960.c
index 9721990..ff81923 100644
--- a/arch/arm/mach-msm/clock-8960.c
+++ b/arch/arm/mach-msm/clock-8960.c
@@ -4812,7 +4812,7 @@
 };
 
 static struct clk_lookup msm_clocks_8064[] = {
-	CLK_LOOKUP("cxo",		cxo_clk.c,	NULL),
+	CLK_LOOKUP("xo",		cxo_clk.c,	"msm_otg"),
 	CLK_LOOKUP("cxo",		cxo_clk.c,	"wcnss_wlan.0"),
 	CLK_LOOKUP("cxo",		cxo_clk.c,	"pil_riva"),
 	CLK_LOOKUP("xo",		pxo_clk.c,	"pil_qdsp6v4.0"),
@@ -5054,7 +5054,7 @@
 };
 
 static struct clk_lookup msm_clocks_8960_v1[] __initdata = {
-	CLK_LOOKUP("cxo",		cxo_clk.c,	NULL),
+	CLK_LOOKUP("xo",		cxo_clk.c,	"msm_otg"),
 	CLK_LOOKUP("cxo",		cxo_clk.c,	"wcnss_wlan.0"),
 	CLK_LOOKUP("cxo",		cxo_clk.c,	"pil_riva"),
 	CLK_LOOKUP("xo",		pxo_clk.c,	"pil_qdsp6v4.0"),