clk: samsung: add new Kconfig for Samsung common clock option

This patch adds new Kconfig file for adding new COMMON_CLK_SAMSUNG option.
Samsung platforms can select this for using common clock infrastructure.

CC: Mike Turquette <mturquette@linaro.org>
Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>