MAINTAINERS: add entry for Atmel timer counter (TC)

Add an entry for the Timer Counter (TC) library and the clocksource
driver that is using this library.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

MAINTAINERS

@@ -1363,6 +1363,13 @@ M:	Nicolas Ferre <nicolas.ferre@atmel.com>
 S:	Supported
 F:	drivers/spi/spi-atmel.*
 
+ATMEL Timer Counter (TC) AND CLOCKSOURCE DRIVERS
+M:	Nicolas Ferre <nicolas.ferre@atmel.com>
+L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+S:	Supported
+F:	drivers/misc/atmel_tclib.c
+F:	drivers/clocksource/tcb_clksrc.c
+
 ATMEL TSADCC DRIVER
 M:	Josh Wu <josh.wu@atmel.com>
 L:	linux-input@vger.kernel.org