clk: rockchip: initialize flags of clk_init_data in mmc-phase clock

clk: rockchip: initialize flags of clk_init_data in mmc-phase clock

commit 595144c1141c951a3c6bb9004ae6a2bc29aad66f upstream.

The flags element of clk_init_data was never initialized for mmc-
phase-clocks resulting in the element containing a random value
and thus possibly enabling unwanted clock flags.

Fixes: 89bf26cbc1a0 ("clk: rockchip: Add support for the mmc clock phases using the framework")
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>