arm/arm64: Kconfig: Add support to use the CLK_QCOM for MSMfalcon

MSMfalcon requires to use COMMON_CLK and COMMON_CLK_QCOM as the clock
framework. Fix the following for CLK_QCOM
 - Add new configs for common clock framework.
 - Remove compilation of audio-ext for COMMON_CLK.
 - Remove ARCH hamster and cobalt from falcon defconfig.
 - Remove ARCH falcon from cobalt defconfig.

Change-Id: I560d62f9698ddf73848186a6740632735d574b0f
Signed-off-by: Taniya Das <tdas@codeaurora.org>