clk: bcm2835: Reuse CLK_DIVIDER_MAX_AT_ZERO for recalc_rate()

We were rolling this ourselves, but clk-divider can do it now.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
1 file changed