sh4: Use 16-bit uid wrappers

Without this patch a simple hello world program emits this:
qemu: Unsupported syscall: 47

Signed-off-by: Magnus Damm <address@hidden>

--- 0001/linux-user/syscall.c
+++ work/linux-user/syscall.c	2007-04-17 11:48:24.000000000 +0900
@@ -74,7 +74,7 @@
 //#define DEBUG
 
 #if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SPARC) \
-    || defined(TARGET_M68K)
+    || defined(TARGET_M68K) || defined(TARGET_SH4)
 /* 16 bit uid wrappers emulation */
 #define USE_UID16
 #endif