sh: mrshpc_setup_windows() needs to be inline.

While no one should be including this file multiple times, flag it
inline anyways just in case.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/include/mach-se/mach/mrshpc.h

@@ -3,7 +3,7 @@
 
 #include <linux/io.h>
 
-static void __init mrshpc_setup_windows(void)
+static inline void __init mrshpc_setup_windows(void)
 {
 	if ((__raw_readw(MRSHPC_CSR) & 0x000c) != 0)
 		return;	/* Not detected */