sh: merge sh7722 and sh7724 DMA register definitions

DMA CHCR register layout is equal on sh7722 and sh7724, reuse definitions.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/include/cpu-sh4/cpu/dma-register.h

@@ -22,7 +22,8 @@
 #define CHCR_TS_LOW_SHIFT	3
 #define CHCR_TS_HIGH_MASK	0
 #define CHCR_TS_HIGH_SHIFT	0
-#elif defined(CONFIG_CPU_SUBTYPE_SH7722)
+#elif defined(CONFIG_CPU_SUBTYPE_SH7722) || \
+	defined(CONFIG_CPU_SUBTYPE_SH7724)
 #define CHCR_TS_LOW_MASK	0x00000018
 #define CHCR_TS_LOW_SHIFT	3
 #define CHCR_TS_HIGH_MASK	0x00300000
@@ -38,11 +39,6 @@
 #define CHCR_TS_LOW_SHIFT	3
 #define CHCR_TS_HIGH_MASK	0
 #define CHCR_TS_HIGH_SHIFT	0
-#elif defined(CONFIG_CPU_SUBTYPE_SH7724)
-#define CHCR_TS_LOW_MASK	0x00000018
-#define CHCR_TS_LOW_SHIFT	3
-#define CHCR_TS_HIGH_MASK	0x00600000
-#define CHCR_TS_HIGH_SHIFT	(20 - 2)	/* 2 bits for shifted low TS */
 #elif defined(CONFIG_CPU_SUBTYPE_SH7780)
 #define CHCR_TS_LOW_MASK	0x00000018
 #define CHCR_TS_LOW_SHIFT	3