[PATCH] kbuild: signed char fixes for scripts

This time I did not break anything... and they shut up gcc4 ;)

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/scripts/conmakehash.c b/scripts/conmakehash.c
index 93dd23f2..e0c6891 100644
--- a/scripts/conmakehash.c
+++ b/scripts/conmakehash.c
@@ -33,7 +33,7 @@
 
 int getunicode(char **p0)
 {
-  unsigned char *p = *p0;
+  char *p = *p0;
 
   while (*p == ' ' || *p == '\t')
     p++;