src: Add required space after "switch"

Change-Id: I85cf93e30606bc7838852bd300a369e79370629a
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/29623
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/drivers/aspeed/common/ast_main.c

@@ -195,7 +195,7 @@ static int ast_detect_chip(struct drm_device *dev, bool *need_post)
 	}
 
 	/* Print stuff for diagnostic purposes */
-	switch(ast->tx_chip_type) {
+	switch (ast->tx_chip_type) {
 	case AST_TX_SIL164:
 		DRM_INFO("Using Sil164 TMDS transmitter\n");
 		break;