ARM: pxa: remove get_memclk_frequency_10khz()

Introduce 'struct clk' for memory and remove
get_memclk_frequency_10khz().

Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

diff --cc arch/arm/mach-pxa/generic.c
Simple merge

diff --cc arch/arm/mach-pxa/generic.h
Simple merge

diff --cc arch/arm/mach-pxa/pxa25x.c
Simple merge

diff --cc arch/arm/mach-pxa/pxa27x.c
Simple merge

diff --cc drivers/pcmcia/pxa2xx_base.c
Simple merge

diff --cc drivers/pcmcia/soc_common.h
Simple merge