mmc: exynos_dw_mmc: set to clksel_val into board-init function

"clksel_val" is assigned to property of mmc or defined value.
But it doesn't write at initial sequence.
There is a reason that get the wrong source-clock value.
This patch fixed it.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>

drivers/mmc/exynos_dw_mmc.c

@@ -64,6 +64,10 @@ static void exynos_dwmci_board_init(struct dwmci_host *host)
 			     MPSCTRL_NON_SECURE_READ_BIT |
 			     MPSCTRL_NON_SECURE_WRITE_BIT | MPSCTRL_VALID);
 	}
+
+	/* Set to clksel_val at initial time */
+	if (host->clksel_val)
+		exynos_dwmci_clksel(host);
 }
 
 static int exynos_dwmci_core_init(struct dwmci_host *host, int index)