Stop using immap_t for guts offset on 85xx

In the future the offsets to various blocks may not be in same location.
Move to using CFG_MPC85xx_GUTS_ADDR as the base of the guts registers
instead of getting it via &immap->im_gur.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/board/cds/mpc8548cds/mpc8548cds.c b/board/cds/mpc8548cds/mpc8548cds.c
index 36d7e1e..4f02f64 100644
--- a/board/cds/mpc8548cds/mpc8548cds.c
+++ b/board/cds/mpc8548cds/mpc8548cds.c
@@ -56,7 +56,7 @@
 int checkboard (void)
 {
 	volatile immap_t *immap = (immap_t *) CFG_CCSRBAR;
-	volatile ccsr_gur_t *gur = &immap->im_gur;
+	volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
 	volatile ccsr_local_ecm_t *ecm = &immap->im_local_ecm;
 
 	/* PCI slot in USER bits CSR[6:7] by convention. */
@@ -96,7 +96,6 @@
 initdram(int board_type)
 {
 	long dram_size = 0;
-	volatile immap_t *immap = (immap_t *)CFG_IMMR;
 
 	puts("Initializing\n");
 
@@ -109,7 +108,7 @@
 		 *    Override DLL = 1, Course Adj = 1, Tap Select = 0
 		 */
 
-		volatile ccsr_gur_t *gur= &immap->im_gur;
+		volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
 
 		gur->ddrdllcr = 0x81000000;
 		asm("sync;isync;msync");
@@ -140,7 +139,7 @@
 local_bus_init(void)
 {
 	volatile immap_t *immap = (immap_t *)CFG_IMMR;
-	volatile ccsr_gur_t *gur = &immap->im_gur;
+	volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
 	volatile ccsr_lbc_t *lbc = &immap->im_lbc;
 
 	uint clkdiv;
@@ -330,8 +329,7 @@
 void
 pci_init_board(void)
 {
-	volatile immap_t *immap = (immap_t *)CFG_IMMR;
-	volatile ccsr_gur_t *gur = &immap->im_gur;
+	volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
 	uint io_sel = (gur->pordevsr & MPC85xx_PORDEVSR_IO_SEL) >> 19;
 	uint host_agent = (gur->porbmsr & MPC85xx_PORBMSR_HA) >> 16;