XTENSA: static should be at beginning of declaration

Make sure that the 'static' keywork is at the beginning of declaration
for arch/xtensa/variants/s6000/include/variant/dmac.h

This gets rid of warnings like
  warning: ‘static’ is not at beginning of declaration
when building with -Wold-style-declaration (and/or -Wextra which also
enables it).
Signed-off-by: NJesper Juhl <jj@chaosbits.net>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

arch/xtensa/variants/s6000/include/variant/dmac.h

@@ -357,7 +357,7 @@ static inline u32 s6dmac_channel_enabled(u32 dmac, int chan)
 static inline void s6dmac_dp_setup_group(u32 dmac, int port,
 			int nrch, int frrep)
 {
-	const static u8 mask[4] = {0, 3, 1, 2};
+	static const u8 mask[4] = {0, 3, 1, 2};
 	BUG_ON(dmac != S6_REG_DPDMA);
 	if ((port < 0) || (port > 3) || (nrch < 1) || (nrch > 4))
 		return;