UPSTREAM: mmc_utils: gp create: only allow partition [1-4] to be selected

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
(cherry picked from commit 928ff072be16eb47c89524bfaec795dfccf8c0dc)
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>

BUG=none
TEST=Compiled, Installed on gnawty

Change-Id: I45f2f866ff516c32e5295d3424c77c739bc904a0
Reviewed-on: https://chromium-review.googlesource.com/338083
Commit-Ready: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Grant Grundler <grundler@chromium.org>
diff --git a/mmc_cmds.c b/mmc_cmds.c
index 79a07cf..3c4c937 100644
--- a/mmc_cmds.c
+++ b/mmc_cmds.c
@@ -697,8 +697,8 @@
 	ext_attr = strtol(argv[5], NULL, 10);
 	device = argv[6];
 
-	if (partition < 0 || partition > 4) {
-		printf("Invalid gp parition number valid range [1-4]\n");
+	if (partition < 1 || partition > 4) {
+		printf("Invalid gp partition number; valid range [1-4].\n");
 		exit(1);
 	}