clk: keystone: sci-clk: fix parsing assigned-clock data during probe

clk: keystone: sci-clk: fix parsing assigned-clock data during probe

The DT clock probe loop incorrectly terminates after processing "clocks"
only, fix this by re-starting the loop when all entries for current
DT property have been parsed.

Fixes: 360b0b93d4e1 ("clk: keystone: sci-clk: probe clocks from DT instead of firmware")
Reported-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Link: https://lore.kernel.org/r/20200907085740.1083-2-t-kristo@ti.com
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>