mmc: meson-mx-sdhc: Don't use literal 0 to initialize structs

Kbuild test robot reports the following warning in lines 56 and 87 of
drivers/mmc/host/meson-mx-sdhc-clkc.c:
  Using plain integer as NULL pointer

Drop the integer value from the struct initialization to fix that
warning. This will still ensure that the compiler will zero out the
struct so it's in a well-defined state.
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20200517222907.1277787-2-martin.blumenstingl@googlemail.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/meson-mx-sdhc-clkc.c

@@ -53,7 +53,7 @@ static int meson_mx_sdhc_clk_hw_register(struct device *dev,
 					 const struct clk_ops *ops,
 					 struct clk_hw *hw)
 {
-	struct clk_init_data init = { 0 };
+	struct clk_init_data init = { };
 	char clk_name[32];
 
 	snprintf(clk_name, sizeof(clk_name), "%s#%s", dev_name(dev),
@@ -84,7 +84,7 @@ static int meson_mx_sdhc_gate_clk_hw_register(struct device *dev,
 int meson_mx_sdhc_register_clkc(struct device *dev, void __iomem *base,
 				struct clk_bulk_data *clk_bulk_data)
 {
-	struct clk_parent_data div_parent = { 0 };
+	struct clk_parent_data div_parent = { };
 	struct meson_mx_sdhc_clkc *clkc_data;
 	int ret;