board: ti: am335x: Use correct dtbs for SanCloud boards

We have different dtbs for the Lite and Extended WiFi variants of the
SanCloud BBE.

Signed-off-by: Paul Barker <paul.barker@sancloud.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/board/ti/am335x/board.c b/board/ti/am335x/board.c
index 2cb5b1c..b97fedd 100644
--- a/board/ti/am335x/board.c
+++ b/board/ti/am335x/board.c
@@ -966,10 +966,20 @@
 		return 0;
 	else if (board_is_icev2() && !strcmp(name, "am335x-icev2"))
 		return 0;
-	else if (board_is_bben() && !strcmp(name, "am335x-sancloud-bbe"))
-		return 0;
-	else
-		return -1;
+	else if (board_is_bben()) {
+		char subtype_id = board_ti_get_config()[1];
+
+		if (subtype_id == 'L') {
+			if (!strcmp(name, "am335x-sancloud-bbe-lite"))
+				return 0;
+		} else if (subtype_id == 'I') {
+			if (!strcmp(name, "am335x-sancloud-bbe-extended-wifi"))
+				return 0;
+		} else if (!strcmp(name, "am335x-sancloud-bbe")) {
+			return 0;
+		}
+	}
+	return -1;
 }
 #endif