MAINTAINERS: Add section for NXP i.MX clock drivers

Add a section for NXP i.MX clock drivers and list myself
as the maintainer.

Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Link: https://lore.kernel.org/r/1610542388-12078-1-git-send-email-abel.vesa@nxp.com
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: abelvesa

MAINTAINERS

@@ -12751,6 +12751,13 @@ F:	drivers/iio/gyro/fxas21002c_core.c
 F:	drivers/iio/gyro/fxas21002c_i2c.c
 F:	drivers/iio/gyro/fxas21002c_spi.c
 
+NXP i.MX CLOCK DRIVERS
+M:	Abel Vesa <abel.vesa@nxp.com>
+L:	linux-clk@vger.kernel.org
+L:	linux-imx@nxp.com
+S:	Maintained
+F:	drivers/clk/imx/
+
 NXP i.MX 8MQ DCSS DRIVER
 M:	Laurentiu Palcu <laurentiu.palcu@oss.nxp.com>
 R:	Lucas Stach <l.stach@pengutronix.de>