ads5121: fix compiler warnings (unused variables)

Signed-off-by: Wolfgang Denk <wd@denx.de>

cpu/mpc512x/cpu.c

@@ -166,9 +166,7 @@ static void old_ft_cpu_setup(void *blob, bd_t *bd)
 
 static void ft_clock_setup(void *blob, bd_t *bd)
 {
-	int node;
 	char *cpu_path = "/cpus/" OF_CPU;
-	const char *path = NULL;
 
 	/*
 	 * fixup cpu clocks using path

cpu/mpc512x/iopin.c

@@ -27,7 +27,7 @@
 
 void iopin_initialize(iopin_t *ioregs_init, int len)
 {
-	short i, j, n, p;
+	short i, j, p;
 	u_long *reg;
 	immap_t *im = (immap_t *)CFG_IMMR;