Stop using immap_t on 85xx

In the future the offsets to various blocks may not be in same location.
Move to using CFG_MPC85xx_*_ADDR as the base of the registers
instead of getting it via &immap.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/board/cds/mpc8555cds/mpc8555cds.c b/board/cds/mpc8555cds/mpc8555cds.c
index 3ed1005..74c220d 100644
--- a/board/cds/mpc8555cds/mpc8555cds.c
+++ b/board/cds/mpc8555cds/mpc8555cds.c
@@ -291,9 +291,8 @@
 void
 local_bus_init(void)
 {
-	volatile immap_t *immap = (immap_t *)CFG_IMMR;
 	volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
-	volatile ccsr_lbc_t *lbc = &immap->im_lbc;
+	volatile ccsr_lbc_t *lbc = (void *)(CFG_MPC85xx_LBC_ADDR);
 
 	uint clkdiv;
 	uint lbc_hz;
@@ -342,8 +341,7 @@
 #if defined(CFG_OR2_PRELIM) && defined(CFG_BR2_PRELIM)
 
 	uint idx;
-	volatile immap_t *immap = (immap_t *)CFG_IMMR;
-	volatile ccsr_lbc_t *lbc = &immap->im_lbc;
+	volatile ccsr_lbc_t *lbc = (void *)(CFG_MPC85xx_LBC_ADDR);
 	uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;
 	uint cpu_board_rev;
 	uint lsdmr_common;