[NET]: move config options out to individual protocols

Move the protocol specific config options out to the specific protocols.
With this change net/Kconfig now starts to become readable and serve as a
good basis for further re-structuring.

The menu structure is left almost intact, except that indention is
fixed in most cases. Most visible are the INET changes where several
"depends on INET" are replaced with a single ifdef INET / endif pair.

Several new files were created to accomplish this change - they are
small but serve the purpose that config options are now distributed
out where they belongs.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/packet/Kconfig

@@ -0,0 +1,26 @@
+#
+# Packet configuration
+#
+
+config PACKET
+	tristate "Packet socket"
+	---help---
+	  The Packet protocol is used by applications which communicate
+	  directly with network devices without an intermediate network
+	  protocol implemented in the kernel, e.g. tcpdump.  If you want them
+	  to work, choose Y.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called af_packet.
+
+	  If unsure, say Y.
+
+config PACKET_MMAP
+	bool "Packet socket: mmapped IO"
+	depends on PACKET
+	help
+	  If you say Y here, the Packet protocol driver will use an IO
+	  mechanism that results in faster communication.
+
+	  If unsure, say N.
+