ppp: Move the PPP drivers

Move the PPP drivers into drivers/net/ppp/ and make the
necessary Kconfig and Makefile changes.

CC: Paul Mackerras <paulus@samba.org>
CC: Frank Cusack <fcusack@fcusack.com>
CC: Michal Ostrowski <mostrows@speakeasy.net>
CC: Michal Ostrowski <mostrows@earthlink.net>
CC: Dmitry Kozlov <xeb@mail.ru>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 2777088..c5ec925 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5066,7 +5066,7 @@
 M:	Paul Mackerras <paulus@samba.org>
 L:	linux-ppp@vger.kernel.org
 S:	Maintained
-F:	drivers/net/ppp_*
+F:	drivers/net/ppp/ppp_*
 
 PPP OVER ATM (RFC 2364)
 M:	Mitchell Blank Jr <mitch@sfgoth.com>
@@ -5077,8 +5077,8 @@
 PPP OVER ETHERNET
 M:	Michal Ostrowski <mostrows@earthlink.net>
 S:	Maintained
-F:	drivers/net/pppoe.c
-F:	drivers/net/pppox.c
+F:	drivers/net/ppp/pppoe.c
+F:	drivers/net/ppp/pppox.c
 
 PPP OVER L2TP
 M:	James Chapman <jchapman@katalix.com>
@@ -5099,7 +5099,7 @@
 M:	Dmitry Kozlov <xeb@mail.ru>
 L:	netdev@vger.kernel.org
 S:	Maintained
-F:	drivers/net/pptp.c
+F:	drivers/net/ppp/pptp.c
 W:	http://sourceforge.net/projects/accel-pptp
 
 PREEMPTIBLE KERNEL