MAINTAINERS: clk: imx: Add Peng Fan as reviewer

Peng Fan will step up to help with reviewing.
Add his email to the i.MX clocks drivers entry.

Cc: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Link: https://lore.kernel.org/r/20230213081038.3958833-1-abel.vesa@linaro.org
Thanks!! Acked-by: Peng Fan <peng.fan@nxp.com>:
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

MAINTAINERS

@@ -14993,6 +14993,7 @@ F:	drivers/iio/gyro/fxas21002c_spi.c
 
 NXP i.MX CLOCK DRIVERS
 M:	Abel Vesa <abelvesa@kernel.org>
+R:	Peng Fan <peng.fan@nxp.com>
 L:	linux-clk@vger.kernel.org
 L:	linux-imx@nxp.com
 S:	Maintained