mpc83xx: Replace CFG_IMMRBAR with CFG_IMMR

Replace all instances of CFG_IMMRBAR with CFG_IMMR, so that the 83xx
tree matches the other 8xxx trees.

Signed-off-by: Timur Tabi <timur@freescale.com>
diff --git a/cpu/mpc83xx/cpu_init.c b/cpu/mpc83xx/cpu_init.c
index eb8f8c0..4f80f4a 100644
--- a/cpu/mpc83xx/cpu_init.c
+++ b/cpu/mpc83xx/cpu_init.c
@@ -219,7 +219,7 @@
 int cpu_init_r (void)
 {
 #ifdef CONFIG_QE
-	uint qe_base = CFG_IMMRBAR + 0x00100000; /* QE immr base */
+	uint qe_base = CFG_IMMR + 0x00100000; /* QE immr base */
 	qe_init(qe_base);
 	qe_reset();
 #endif