clk: hisilicon: hi3660-stub: move comma from declaration of DEFINE_CLK_STUB()

clk: hisilicon: hi3660-stub: move comma from declaration of DEFINE_CLK_STUB()

When trying to use Coccinelle to make changes inside drivers/clk/, it
really does not like the trailing comma at the end of the declaration
of DEFINE_CLK_STUB, and fails to process this file. It also looks weird
to not have commas to separate the various array members of
hi3660_stub_clks. Let's move the trailing comma out of the define so
that Coccinelle can be ran against this source file.

Signed-off-by: Brian Masney <bmasney@redhat.com>