linux-phytec-fsl

clk: mvebu: Use of_clk_get_parent_name()

This reverts commit e79b202c632f24f49f2eb9459b88b5fd9e332263.

Now that we use of_clk_get() inside of_clk_get_parent_name() we
can safely use it here.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>