ARM: S5PV210: Add sclk_audio and sclk_spdif clocks.

Add the sclk_audio(0/1/2) clocks and sclk_spdif clock of type
'struct clksrc_clk' clock. Also, add clk_pcmcdclk(0/1/2) clocks
of type 'struct clk' clock.

Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>