ARM: rmobile: Repair TMU clock on Gen2

The Gen2 TMU is fed with fixed 32.5 MHz signal from CP .
This is then divided by 4 in TMU. Fix the timer clock
setting in Gen2.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>

include/configs/rcar-gen2-common.h

@@ -60,6 +60,6 @@
 #define CONFIG_TMU_TIMER
 #define CONFIG_SYS_TIMER_COUNTS_DOWN
 #define CONFIG_SYS_TIMER_COUNTER	(TMU_BASE + 0xc)	/* TCNT0 */
-#define CONFIG_SYS_TIMER_RATE		(CONFIG_SYS_CLK_FREQ / 8)
+#define CONFIG_SYS_TIMER_RATE		(32500000 / 4)		/* CP/4 */
 
 #endif	/* __RCAR_GEN2_COMMON_H */