amd64_edac: fix DRAM base and limit address extraction

K8 DRAM base and limit addresses from F1x40 +8*i and F1x44 + 8*i, where
i in (0..7) are both bits 39-24 and therefore the shifting should be
done by 24 and not by 8.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>

drivers/edac/amd64_edac.c

@@ -1130,7 +1130,7 @@ static void k8_read_dram_base_limit(struct amd64_pvt *pvt, int dram)
 		debugf0("Reading K8_DRAM_BASE_LOW failed\n");
 
 	/* Extract parts into separate data entries */
-	pvt->dram_base[dram] = ((u64) low & 0xFFFF0000) << 8;
+	pvt->dram_base[dram] = ((u64) low & 0xFFFF0000) << 24;
 	pvt->dram_IntlvEn[dram] = (low >> 8) & 0x7;
 	pvt->dram_rw_en[dram] = (low & 0x3);
 
@@ -1143,7 +1143,7 @@ static void k8_read_dram_base_limit(struct amd64_pvt *pvt, int dram)
 	 * Extract parts into separate data entries. Limit is the HIGHEST memory
 	 * location of the region, so lower 24 bits need to be all ones
 	 */
-	pvt->dram_limit[dram] = (((u64) low & 0xFFFF0000) << 8) | 0x00FFFFFF;
+	pvt->dram_limit[dram] = (((u64) low & 0xFFFF0000) << 24) | 0x00FFFFFF;
 	pvt->dram_IntlvSel[dram] = (low >> 8) & 0x7;
 	pvt->dram_DstNode[dram] = (low & 0x7);
 }