GCC4,6: Squash warning in cmd_nand.c

cmd_nand.c: In function ‘do_nand’:
cmd_nand.c:490:7: warning: variable ‘chip’ set but not used
[-Wunused-but-set-variable]
cmd_nand.c:489:7: warning: variable ‘part’ set but not used
[-Wunused-but-set-variable]

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Cc: Scott Wood <scottwood@freescale.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>

common/cmd_nand.c

@@ -466,8 +466,6 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 		int clean = argc > 2 && !strcmp("clean", argv[2]);
 		int o = clean ? 3 : 2;
 		int scrub = !strncmp(cmd, "scrub", 5);
-		int part = 0;
-		int chip = 0;
 		int spread = 0;
 		int args = 2;
 
@@ -475,10 +473,8 @@ int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 			if (!strcmp(&cmd[5], ".spread")) {
 				spread = 1;
 			} else if (!strcmp(&cmd[5], ".part")) {
-				part = 1;
 				args = 1;
 			} else if (!strcmp(&cmd[5], ".chip")) {
-				chip = 1;
 				args = 0;
 			} else {
 				goto usage;