ASoC: qdsp6v2: move AFE clock macros to header

As AFE clock version macros can be used
in other drivers, move them to header file.

Change-Id: Iae5717c181e81bf7a6161742e8d062d09bedfb78
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>