microblaze: Fix sparse warning - cpuinfo.h

Warning log:
CHECK arch/microblaze/kernel/cpu/cpuinfo-static.c
arch/microblaze/include/asm/cpuinfo.h:101:21: warning: incorrect type in argument 1 (different signedness)
arch/microblaze/include/asm/cpuinfo.h:101:21: expected unsigned int const [usertype] *p
arch/microblaze/include/asm/cpuinfo.h:101:21: got int *[assigned] val
...

Signed-off-by: Michal Simek <[e-mail]>

arch/microblaze/include/asm/cpuinfo.h

···
 
 static inline unsigned int fcpu(struct device_node *cpu, char *n)
 {
-	int *val;
-	return (val = (int *) of_get_property(cpu, n, NULL)) ?
+	const __be32 *val;
+	return (val = of_get_property(cpu, n, NULL)) ?
 							be32_to_cpup(val) : 0;
 }