clk: tegra: Constify pdiv-to-hw mappings

This is static data that is never modified, so make it const.

Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/drivers/clk/tegra/clk-tegra124.c b/drivers/clk/tegra/clk-tegra124.c
index d98bf68..156a753 100644
--- a/drivers/clk/tegra/clk-tegra124.c
+++ b/drivers/clk/tegra/clk-tegra124.c
@@ -168,7 +168,7 @@
 	.divp_width = 4,
 };
 
-static struct pdiv_map pllxc_p[] = {
+static const struct pdiv_map pllxc_p[] = {
 	{ .pdiv =  1, .hw_val =  0 },
 	{ .pdiv =  2, .hw_val =  1 },
 	{ .pdiv =  3, .hw_val =  2 },
@@ -264,7 +264,7 @@
 	.divp_width = 3,
 };
 
-static struct pdiv_map pllc_p[] = {
+static const struct pdiv_map pllc_p[] = {
 	{ .pdiv =  1, .hw_val = 0 },
 	{ .pdiv =  2, .hw_val = 1 },
 	{ .pdiv =  3, .hw_val = 2 },
@@ -338,7 +338,7 @@
 	.divp_width = 4,
 };
 
-static struct pdiv_map pll12g_ssd_esd_p[] = {
+static const struct pdiv_map pll12g_ssd_esd_p[] = {
 	{ .pdiv =  1, .hw_val =  0 },
 	{ .pdiv =  2, .hw_val =  1 },
 	{ .pdiv =  3, .hw_val =  2 },
@@ -388,7 +388,7 @@
 	.freq_table = pll_c4_freq_table,
 };
 
-static struct pdiv_map pllm_p[] = {
+static const struct pdiv_map pllm_p[] = {
 	{ .pdiv = 1, .hw_val = 0 },
 	{ .pdiv = 2, .hw_val = 1 },
 	{ .pdiv = 0, .hw_val = 0 },
@@ -682,7 +682,7 @@
 	.freq_table = pll_dp_freq_table,
 };
 
-static struct pdiv_map pllu_p[] = {
+static const struct pdiv_map pllu_p[] = {
 	{ .pdiv = 1, .hw_val = 1 },
 	{ .pdiv = 2, .hw_val = 0 },
 	{ .pdiv = 0, .hw_val = 0 },