MAINTAINERS: add include/dt-bindings/clock to COMMON CLK FRAMEWORK

Maintainers of the directory Documentation/devicetree/bindings/clock
are also the maintainers of the corresponding directory in
include/dt-bindings/clock.

Add the file entry for include/dt-bindings/clock to the appropriate
section in MAINTAINERS.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Link: https://lore.kernel.org/r/20220613085100.402-1-lukas.bulwahn@gmail.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

MAINTAINERS

@@ -4952,6 +4952,7 @@ Q:	http://patchwork.kernel.org/project/linux-clk/list/
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git
 F:	Documentation/devicetree/bindings/clock/
 F:	drivers/clk/
+F:	include/dt-bindings/clock/
 F:	include/linux/clk-pr*
 F:	include/linux/clk/
 F:	include/linux/of_clk.h