fix address of error message in mtest command

This patch deal with error message of mtest command.
When test failed, the mtest command will output error information
that include memory address and value. But the address field is
not correct or misleading.

Signed-off-by: David Feng <fenghua@phytium.com.cn>
diff --git a/common/cmd_mem.c b/common/cmd_mem.c
index c3aab3d..8d2cfc8 100644
--- a/common/cmd_mem.c
+++ b/common/cmd_mem.c
@@ -746,7 +746,8 @@
 		if (temp != pattern) {
 			printf("\nFAILURE: Address bit stuck high @ 0x%.8lx:"
 				" expected 0x%.8lx, actual 0x%.8lx\n",
-				start_addr + offset, pattern, temp);
+				start_addr + offset*sizeof(vu_long),
+				pattern, temp);
 			errs++;
 			if (ctrlc())
 				return -1;
@@ -767,7 +768,8 @@
 				printf("\nFAILURE: Address bit stuck low or"
 					" shorted @ 0x%.8lx: expected 0x%.8lx,"
 					" actual 0x%.8lx\n",
-					start_addr + offset, pattern, temp);
+					start_addr + offset*sizeof(vu_long),
+					pattern, temp);
 				errs++;
 				if (ctrlc())
 					return -1;
@@ -807,7 +809,8 @@
 		if (temp != pattern) {
 			printf("\nFAILURE (read/write) @ 0x%.8lx:"
 				" expected 0x%.8lx, actual 0x%.8lx)\n",
-				start_addr + offset, pattern, temp);
+				start_addr + offset*sizeof(vu_long),
+				pattern, temp);
 			errs++;
 			if (ctrlc())
 				return -1;
@@ -827,7 +830,8 @@
 		if (temp != anti_pattern) {
 			printf("\nFAILURE (read/write): @ 0x%.8lx:"
 				" expected 0x%.8lx, actual 0x%.8lx)\n",
-				start_addr + offset, anti_pattern, temp);
+				start_addr + offset*sizeof(vu_long),
+				anti_pattern, temp);
 			errs++;
 			if (ctrlc())
 				return -1;
@@ -885,7 +889,7 @@
 
 			printf("\nMem error @ 0x%08X: "
 				"found %08lX, expected %08lX\n",
-				(uint)(uintptr_t)(start_addr + offset),
+				(uint)(uintptr_t)(start_addr + offset*sizeof(vu_long)),
 				readback, val);
 			errs++;
 			if (ctrlc())