Set default board_id to QTN_RUBY_UNIVERSAL_BOARD_ID

This allows us to remove the board_id from the kernel command line
diff --git a/drivers/qtn/ruby/board_config.c b/drivers/qtn/ruby/board_config.c
index b8f44c6..8cdec5d 100644
--- a/drivers/qtn/ruby/board_config.c
+++ b/drivers/qtn/ruby/board_config.c
@@ -28,7 +28,7 @@
 #include <common/ruby_board_db.h>
 #include <common/ruby_partitions.h>
 
-static int			global_board_id = -1;
+static int			global_board_id = QTN_RUBY_UNIVERSAL_BOARD_ID;
 static int			global_spi_protect_mode = 0;
 static int			g_slow_ethernet = 0;
 static const board_cfg_t	g_board_cfg_table[] = QTN_BOARD_DB;