nfp: Explicitly include linux/bug.h

Today's -next build encountered an error due to a missing definition of
WARN_ON(), caused by some header reorganization removing an implicit
inclusion of linux/bug.h.  Fix this with an explicit inclusion.
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/netronome/nfp/nfp_app.c

@@ -31,6 +31,7 @@
  * SOFTWARE.
  */
 
+#include <linux/bug.h>
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 

drivers/net/ethernet/netronome/nfp/nfp_asm.h

@@ -35,6 +35,7 @@
 #define __NFP_ASM_H__ 1
 
 #include <linux/bitfield.h>
+#include <linux/bug.h>
 #include <linux/types.h>
 
 #define REG_NONE	0