toradex: configblock: fix module revision in config block

U-boot might display wrong module revision information
for modules with an assembly version 'K'. "cfgblock create"
does not takes into account all revision digits from PID8.

This fix takes into account all digits of PID8
to store module revision.

Signed-off-by: Denys Drozdov <denys.drozdov@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
diff --git a/board/toradex/common/tdx-cfg-block.c b/board/toradex/common/tdx-cfg-block.c
index b00467f..93eb20c 100644
--- a/board/toradex/common/tdx-cfg-block.c
+++ b/board/toradex/common/tdx-cfg-block.c
@@ -556,6 +556,8 @@
 static int get_cfgblock_barcode(char *barcode, struct toradex_hw *tag,
 				u32 *serial)
 {
+	char revision[3] = {barcode[6], barcode[7], '\0'};
+
 	if (strlen(barcode) < 16) {
 		printf("Argument too short, barcode is 16 chars long\n");
 		return -1;
@@ -564,7 +566,7 @@
 	/* Get hardware information from the first 8 digits */
 	tag->ver_major = barcode[4] - '0';
 	tag->ver_minor = barcode[5] - '0';
-	tag->ver_assembly = barcode[7] - '0';
+	tag->ver_assembly = simple_strtoul(revision, NULL, 10);
 
 	barcode[4] = '\0';
 	tag->prodid = simple_strtoul(barcode, NULL, 10);