Fix the cpu speed setup to work with all boards.

include/configs/spc1920.h

@@ -310,7 +310,7 @@
  * FLASH timing:
  */
 #define CFG_OR_TIMING_FLASH	(OR_ACS_DIV1  | OR_TRLX | OR_CSNT_SAM | \
-				 OR_SCY_3_CLK | OR_EHTR | OR_BI)
+				 OR_SCY_6_CLK | OR_EHTR | OR_BI)
 
 #define CFG_OR0_REMAP	(CFG_REMAP_OR_AM  | CFG_OR_TIMING_FLASH)
 #define CFG_OR0_PRELIM	(CFG_PRELIM_OR_AM | CFG_OR_TIMING_FLASH)