[NET]: rfkill: add support for input key to control wireless radio

The RF kill patch that provides infrastructure for implementing
switches controlling radio states on various network and other cards.

[dtor@insightbb.com: address review comments]
[akpm@linux-foundation.org: cleanups, build fixes]

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/rfkill/Makefile

diff --git a/net/rfkill/Makefile b/net/rfkill/Makefile
new file mode 100644
index 0000000..b38c430
--- /dev/null
+++ b/net/rfkill/Makefile
@@ -0,0 +1,6 @@
+#
+# Makefile for the RF switch subsystem.
+#
+
+obj-$(CONFIG_RFKILL)			+= rfkill.o
+obj-$(CONFIG_RFKILL_INPUT)		+= rfkill-input.o