ARM: shmobile: r8a7790: Correct SYS DMAC clock defines

This brings the implementation into line with the documentation.

This problem was introduced when SYS DMAC clock defines were added by
ac991dce ("ARM: shmobile: r8a7790: Add clock index macros for DT
sources") in v3.13-rc2. I do not believe this results in any problems as
these defines do not appear to be used anywhere yet.
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>

include/dt-bindings/clock/r8a7790-clock.h

@@ -46,8 +46,8 @@
 #define R8A7790_CLK_MSIOF1		8
 #define R8A7790_CLK_MSIOF3		15
 #define R8A7790_CLK_SCIFB2		16
-#define R8A7790_CLK_SYS_DMAC0		18
-#define R8A7790_CLK_SYS_DMAC1		19
+#define R8A7790_CLK_SYS_DMAC1		18
+#define R8A7790_CLK_SYS_DMAC0		19
 
 /* MSTP3 */
 #define R8A7790_CLK_TPU0		4