nb/intel/sandybridge: Use new fixed BAR accessors

One instance in northbridge.c breaks reproduciblity when changed.

Tested with BUILD_TIMELESS=1, Asus P8Z77-V LX2 remains identical.

Change-Id: I2148183827bcacc9e6edb91b26ad35eb2dae5090
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51866
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/northbridge/intel/sandybridge/raminit_shared.c b/src/northbridge/intel/sandybridge/raminit_shared.c
index 426035d..543d285 100644
--- a/src/northbridge/intel/sandybridge/raminit_shared.c
+++ b/src/northbridge/intel/sandybridge/raminit_shared.c
@@ -21,15 +21,15 @@
 	u32 addr_decoder_common, addr_decode_ch[2];
 	int i;
 
-	addr_decoder_common = MCHBAR32(MAD_CHNL);
-	addr_decode_ch[0]   = MCHBAR32(MAD_DIMM_CH0);
-	addr_decode_ch[1]   = MCHBAR32(MAD_DIMM_CH1);
+	addr_decoder_common = mchbar_read32(MAD_CHNL);
+	addr_decode_ch[0]   = mchbar_read32(MAD_DIMM_CH0);
+	addr_decode_ch[1]   = mchbar_read32(MAD_DIMM_CH1);
 
-	const int refclk = MCHBAR32(MC_BIOS_REQ) & 0x100 ? 100 : 133;
+	const int refclk = mchbar_read32(MC_BIOS_REQ) & 0x100 ? 100 : 133;
 
 	printk(BIOS_DEBUG, "memcfg DDR3 ref clock %d MHz\n", refclk);
 	printk(BIOS_DEBUG, "memcfg DDR3 clock %d MHz\n",
-	       (MCHBAR32(MC_BIOS_DATA) * refclk * 100 * 2 + 50) / 100);
+	       (mchbar_read32(MC_BIOS_DATA) * refclk * 100 * 2 + 50) / 100);
 
 	printk(BIOS_DEBUG, "memcfg channel assignment: A: %d, B % d, C % d\n",
 	       (addr_decoder_common >> 0) & 3,