powerpc64/ftrace: Drop pointless static qualifier in is_b_op()

There is no need to have the 'intoffset' variable static since new value
always be assigned before use it.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/kernel/trace/ftrace.c

@@ -107,7 +107,7 @@ static int is_b_op(unsigned int op)
 
 static unsigned long find_bl_target(unsigned long ip, unsigned int op)
 {
-	static int offset;
+	int offset;
 
 	offset = (op & 0x03fffffc);
 	/* make it signed */