arm: dts: socfpga: remove "clk-phase" in sdmmc_clk

Now that the SDMMC driver can use the "clk-phase-sd-hs" binding, we don't
need the clk-phase in the sdmmc_clk anymore.

Signed-off-by: Dinh Nguyen <[e-mail]>

arch/arm/boot/dts/socfpga.dtsi

···
 						compatible = "altr,socfpga-gate-clk";
 						clocks = <&f2s_periph_ref_clk>, <&main_nand_sdmmc_clk>, <&per_nand_mmc_clk>;
 						clk-gate = <0xa0 8>;
-						clk-phase = <0 135>;
 					};
 
 					sdmmc_clk_divided: sdmmc_clk_divided {

arch/arm/boot/dts/socfpga_arria10.dtsi

···
 						compatible = "altr,socfpga-a10-gate-clk";
 						clocks = <&sdmmc_free_clk>;
 						clk-gate = <0xC8 5>;
-						clk-phase = <0 135>;
 					};
 
 					qspi_clk: qspi_clk {