fix the dram low addr defined in the soc.h header
#define SOC_IROM_HIGH 0x40400000
#define SOC_DROM_LOW 0x3F400000
#define SOC_DROM_HIGH 0x3F800000
-#define SOC_DRAM_LOW 0x3FAE0000
+#define SOC_DRAM_LOW 0x3FFAE000
#define SOC_DRAM_HIGH 0x40000000
#define SOC_RTC_IRAM_LOW 0x400C0000
#define SOC_RTC_IRAM_HIGH 0x400C2000
