m68k: Some network drivers do not check the platform

Some network drivers do not check whether they're actually running on the
correct platform, causing multi-platform kernels to crash if they are not.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/net/apne.c b/drivers/net/apne.c
index 47a8275..867f6ff 100644
--- a/drivers/net/apne.c
+++ b/drivers/net/apne.c
@@ -127,6 +127,9 @@
 #endif
 	int err;
 
+	if (!MACH_IS_AMIGA)
+		return ERR_PTR(-ENODEV);
+
 	if (apne_owned)
 		return ERR_PTR(-ENODEV);