Intel e7505: renames only

Drop maybe-prefix in registers and tables.
Have a name in place of PCI_DEV(x,y,z) to avoid confusion.

Change-Id: I88f51b50d7fd83294aa14455a83418630e1bab85
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/882
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/northbridge/intel/e7505/northbridge.c b/src/northbridge/intel/e7505/northbridge.c
index 1ea3ce9..6a533cd 100644
--- a/src/northbridge/intel/e7505/northbridge.c
+++ b/src/northbridge/intel/e7505/northbridge.c
@@ -38,7 +38,7 @@
 		 * the physical memory.  The units are ticks of 64MB
 		 * i.e. 1 means 64MB.
 		 */
-		tomk = ((unsigned long)pci_read_config8(mc_dev, 0x67)) << 16;
+		tomk = ((unsigned long)pci_read_config8(mc_dev, DRB_ROW_7)) << 16;
 		/* Compute the top of Low memory */
 		tolmk = pci_tolm >> 10;
 		if (tolmk >= tomk) {