clk: imx: clk-pll14xx: Make two variables static

Fix sparse warnings:

drivers/clk/imx/clk-pll14xx.c:44:37:
 warning: symbol 'imx_pll1416x_tbl' was not declared. Should it be static?
drivers/clk/imx/clk-pll14xx.c:57:37:
 warning: symbol 'imx_pll1443x_tbl' was not declared. Should it be static?
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

drivers/clk/imx/clk-pll14xx.c

@@ -41,7 +41,7 @@ struct clk_pll14xx {
 
 #define to_clk_pll14xx(_hw) container_of(_hw, struct clk_pll14xx, hw)
 
-const struct imx_pll14xx_rate_table imx_pll1416x_tbl[] = {
+static const struct imx_pll14xx_rate_table imx_pll1416x_tbl[] = {
 	PLL_1416X_RATE(1800000000U, 225, 3, 0),
 	PLL_1416X_RATE(1600000000U, 200, 3, 0),
 	PLL_1416X_RATE(1500000000U, 375, 3, 1),
@@ -54,7 +54,7 @@ const struct imx_pll14xx_rate_table imx_pll1416x_tbl[] = {
 	PLL_1416X_RATE(600000000U,  300, 3, 2),
 };
 
-const struct imx_pll14xx_rate_table imx_pll1443x_tbl[] = {
+static const struct imx_pll14xx_rate_table imx_pll1443x_tbl[] = {
 	PLL_1443X_RATE(650000000U, 325, 3, 2, 0),
 	PLL_1443X_RATE(594000000U, 198, 2, 2, 0),
 	PLL_1443X_RATE(393216000U, 262, 2, 3, 9437),