Revert "staging: board: Remove macro board_staging"

This reverts commit 850c35bb as it
breaks the build.

Cc: Song Chen <chensong_2000@189.cn>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20210104122653.6f35b9bb@canb.auug.org.auSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/board/armadillo800eva.c

@@ -80,11 +80,9 @@ static const struct board_staging_dev armadillo800eva_devices[] __initconst = {
 
 static void __init armadillo800eva_init(void)
 {
-	if (of_machine_is_compatible("renesas,armadillo800eva")) {
 	board_staging_gic_setup_xlate("arm,pl390", 32);
 	board_staging_register_devices(armadillo800eva_devices,
 				       ARRAY_SIZE(armadillo800eva_devices));
-	}
 }
 
-device_initcall(armadillo800eva_init);
+board_staging("renesas,armadillo800eva", armadillo800eva_init);

drivers/staging/board/board.h

@@ -32,4 +32,15 @@ int board_staging_register_device(const struct board_staging_dev *dev);
 void board_staging_register_devices(const struct board_staging_dev *devs,
 				    unsigned int ndevs);
 
+#define board_staging(str, fn)			\
+static int __init runtime_board_check(void)	\
+{						\
+	if (of_machine_is_compatible(str))	\
+		fn();				\
+						\
+	return 0;				\
+}						\
+						\
+device_initcall(runtime_board_check)
+
 #endif /* __BOARD_H__ */

drivers/staging/board/kzm9d.c

@@ -12,7 +12,6 @@ static struct resource usbs1_res[] __initdata = {
 
 static void __init kzm9d_init(void)
 {
-	if (of_machine_is_compatible("renesas,kzm9d")) {
 	board_staging_gic_setup_xlate("arm,pl390", 32);
 
 	if (!board_staging_dt_node_available(usbs1_res,
@@ -22,7 +21,6 @@ static void __init kzm9d_init(void)
 		platform_device_register_simple("emxx_udc", -1, usbs1_res,
 						ARRAY_SIZE(usbs1_res));
 	}
-	}
 }
 
-device_initcall(kzm9d_init);
+board_staging("renesas,kzm9d", kzm9d_init);