This flag is a no-op now (see commit 
47b0eeb3dc8a "clk: Deprecate
CLK_IS_ROOT", 2016-02-02) so remove it.
Cc: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Michael Tatarinov <kukabu@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
        [DS3231_CLK_SQW] = {
                .name = "ds3231_clk_sqw",
                .ops = &ds3231_clk_sqw_ops,
-               .flags = CLK_IS_ROOT,
        },
        [DS3231_CLK_32KHZ] = {
                .name = "ds3231_clk_32khz",
                .ops = &ds3231_clk_32khz_ops,
-               .flags = CLK_IS_ROOT,
        },
 };