clk: qcom: Constify the parent names arrays

Make const both the array and the strings, so they can be
moved to .rodata section.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/clk/qcom/gcc-ipq806x.c b/drivers/clk/qcom/gcc-ipq806x.c
index 5639699..40e4802 100644
--- a/drivers/clk/qcom/gcc-ipq806x.c
+++ b/drivers/clk/qcom/gcc-ipq806x.c
@@ -188,7 +188,7 @@
 	{ P_PLL8, 3 }
 };
 
-static const char *gcc_pxo_pll8[] = {
+static const char * const gcc_pxo_pll8[] = {
 	"pxo",
 	"pll8_vote",
 };
@@ -199,7 +199,7 @@
 	{ P_CXO, 5 }
 };
 
-static const char *gcc_pxo_pll8_cxo[] = {
+static const char * const gcc_pxo_pll8_cxo[] = {
 	"pxo",
 	"pll8_vote",
 	"cxo",
@@ -215,7 +215,7 @@
 	{ P_PLL3, 6 }
 };
 
-static const char *gcc_pxo_pll3[] = {
+static const char * const gcc_pxo_pll3[] = {
 	"pxo",
 	"pll3",
 };
@@ -226,7 +226,7 @@
 	{ P_PLL0, 2 }
 };
 
-static const char *gcc_pxo_pll8_pll0_map[] = {
+static const char * const gcc_pxo_pll8_pll0_map[] = {
 	"pxo",
 	"pll8_vote",
 	"pll0_vote",
@@ -240,7 +240,7 @@
 	{ P_PLL18, 1 }
 };
 
-static const char *gcc_pxo_pll8_pll14_pll18_pll0[] = {
+static const char * const gcc_pxo_pll8_pll14_pll18_pll0[] = {
 	"pxo",
 	"pll8_vote",
 	"pll0_vote",