[POWERPC] Don't cast kmalloc return value in ibmebus.c

kmalloc() returns a void pointer so there is absolutely no need to
cast it in ibmebus_chomp().

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index d6a38cd..7697d5b 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -371,7 +371,8 @@
 
 static char *ibmebus_chomp(const char *in, size_t count)
 {
-	char *out = (char*)kmalloc(count + 1, GFP_KERNEL);
+	char *out = kmalloc(count + 1, GFP_KERNEL);
+
 	if (!out)
 		return NULL;