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/lib_ppc/board.c b/lib_ppc/board.c
index 844bbc9..1866dc5 100644
--- a/lib_ppc/board.c
+++ b/lib_ppc/board.c
@@ -511,7 +511,7 @@
 	bd->bi_mbar_base = CFG_MBAR;	/* base of internal registers */
 #endif
 #if defined(CONFIG_MPC83XX)
-	bd->bi_immrbar = CFG_IMMRBAR;
+	bd->bi_immrbar = CFG_IMMR;
 #endif
 #if defined(CONFIG_MPC8220)
 	bd->bi_mbar_base = CFG_MBAR;	/* base of internal registers */