board: siemens: iot2050: Fix coding style

Add a space after the 'if'

Signed-off-by: Baocheng Su <baocheng.su@siemens.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
diff --git a/board/siemens/iot2050/board.c b/board/siemens/iot2050/board.c
index ed292c3..e5c7ce5 100644
--- a/board/siemens/iot2050/board.c
+++ b/board/siemens/iot2050/board.c
@@ -220,7 +220,7 @@
 	if (board_is_advanced()) {
 		if (board_is_pg1())
 			fdtfile = "ti/k3-am6548-iot2050-advanced.dtb";
-		else if(board_is_m2())
+		else if (board_is_m2())
 			fdtfile = "ti/k3-am6548-iot2050-advanced-m2.dtb";
 		else
 			fdtfile = "ti/k3-am6548-iot2050-advanced-pg2.dtb";