staging: vc04_services: add CONFIG_COMPILE_TEST ability

It would be nice to be able to build this code on other platforms other
than only the RPi, so add some empty macros to allow this to happen, and
turn off BROKEN as the code can now build properly thanks to Michael's
work.

Cc: Michael Zoran <mzoran@crowfest.net>
Cc: Daniel Stone <daniels@collabora.com>
Cc: "Noralf Trønnes" <noralf@tronnes.org>
Cc: Pranith Kumar <bobby.prani@gmail.com>
Cc: popcornmix <popcornmix@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vc04_services/Kconfig

@@ -1,6 +1,6 @@
 config BCM2835_VCHIQ
 	tristate "Videocore VCHIQ"
-	depends on RASPBERRYPI_FIRMWARE && BROKEN
+	depends on RASPBERRYPI_FIRMWARE || COMPILE_TEST
 	default y
 	help
 		Kernel to VideoCore communication interface for the

drivers/staging/vc04_services/interface/vchiq_arm/vchiq.h

@@ -37,4 +37,15 @@
 #include "vchiq_if.h"
 #include "vchiq_util.h"
 
+/* Do this so that we can test-build the code on non-rpi systems */
+#if IS_ENABLED(CONFIG_RASPBERRYPI_FIRMWARE)
+
+#else
+
+#ifndef dsb
+#define dsb(a)
+#endif
+
+#endif	/* IS_ENABLED(CONFIG_RASPBERRYPI_FIRMWARE) */
+
 #endif