cfg80211: errno.h: define ERFKILL

Commit 1f87f7d3 (cfg80211: add rfkill support) added ERFKILL
to asm-generic/errno.h, but alpha, mips, parisc and sparc use
their own numbering scheme and do not include asm-generic/errno.h.
We need to add definition of ERFKILL for them.
Signed-off-by: NAlexander Beregalov <a.beregalov@gmail.com>
Acked-by: NRalf Baechle <ralf@linux-mips.org>
Acked-by: NKyle McMartin <kyle@mcmartin.ca>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/alpha/include/asm/errno.h

@@ -120,4 +120,6 @@
 #define	EOWNERDEAD	136	/* Owner died */
 #define	ENOTRECOVERABLE	137	/* State not recoverable */
 
+#define	ERFKILL		138	/* Operation not possible due to RF-kill */
+
 #endif

arch/mips/include/asm/errno.h

@@ -119,6 +119,8 @@
 #define	EOWNERDEAD	165	/* Owner died */
 #define	ENOTRECOVERABLE	166	/* State not recoverable */
 
+#define	ERFKILL		167	/* Operation not possible due to RF-kill */
+
 #define EDQUOT		1133	/* Quota exceeded */
 
 #ifdef __KERNEL__

arch/parisc/include/asm/errno.h

@@ -120,5 +120,6 @@
 #define EOWNERDEAD	254	/* Owner died */
 #define ENOTRECOVERABLE	255	/* State not recoverable */
 
+#define	ERFKILL		256	/* Operation not possible due to RF-kill */
 
 #endif

arch/sparc/include/asm/errno.h

@@ -110,4 +110,6 @@
 #define	EOWNERDEAD	132	/* Owner died */
 #define	ENOTRECOVERABLE	133	/* State not recoverable */
 
+#define	ERFKILL		134	/* Operation not possible due to RF-kill */
+
 #endif