MAINTAINERS: add an entry for the PHC code

Some months ago, tglx asked me off list if I would maintain the PTP
Hardware Clock code. Since then, the code has been fully merged, and I
am actively looking after it. This patch makes it official.
Signed-off-by: NRichard Cochran <richardcochran@gmail.com>
Acked-by: NJohn Stultz <john.stultz@linaro.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

MAINTAINERS

@@ -5317,6 +5317,17 @@ L:	cbe-oss-dev@lists.ozlabs.org
 S:	Maintained
 F:	drivers/block/ps3vram.c
 
+PTP HARDWARE CLOCK SUPPORT
+M:	Richard Cochran <richardcochran@gmail.com>
+S:	Maintained
+W:	http://linuxptp.sourceforge.net/
+F:	Documentation/ABI/testing/sysfs-ptp
+F:	Documentation/ptp/*
+F:	drivers/net/gianfar_ptp.c
+F:	drivers/net/phy/dp83640*
+F:	drivers/ptp/*
+F:	include/linux/ptp_cl*
+
 PTRACE SUPPORT
 M:	Roland McGrath <roland@redhat.com>
 M:	Oleg Nesterov <oleg@redhat.com>