clk: s2mps11: remove redundant code

The definition of s2mps11_name is meant to resolve the name of a
given clock. Remove it because the clocks have the same name we
can get it directly from the s2mps11_clks_init structure.

While in the probe function the s2mps11_clks is used only to
iterate through the s2mps11_clks. The naming itself brings
confusion and the readability does not improve much.

Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>