nitrogen8m: ddr_init: use MHZ(800)

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

arch/arm/include/asm/arch-imx8m/clock.h

@@ -8,6 +8,8 @@
 #ifndef _ASM_ARCH_IMX8M_CLOCK_H
 #define _ASM_ARCH_IMX8M_CLOCK_H
 
+#define MHZ(X)	((X) * 1000000UL)
+
 #ifdef CONFIG_IMX8MQ
 #include <asm/arch/clock_imx8mq.h>
 #else

board/boundary/nitrogen8m/ddr/ddr_init.c

@@ -229,7 +229,7 @@ void ddr_init(void)
 	reg32_write(0x303A00EC, 0x0000ffff); /* PGC_CPU_MAPPING */
 	reg32setbit(0x303A00F8, 5); /* PU_PGC_SW_PUP_REQ */
 
-	dram_pll_init(SSCG_PLL_OUT_800M);
+	dram_pll_init(MHZ(800));
 
 	reg32_write(SRC_DDRC_RCR_ADDR, 0x8F000006);