clk: Add driver for Maxim 77802 PMIC clocks

The MAX77802 PMIC has two 32.768kHz Buffered Clock Outputs with
Low Jitter Mode. This patch adds support for these two clocks.

Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

diff --cc drivers/clk/Kconfig
Simple merge

diff --cc drivers/clk/Makefile
Simple merge

diff --cc drivers/clk/clk-max77802.c
Simple merge

diff --cc include/dt-bindings/clock/maxim,max77802.h
Simple merge