staging: r8188eu: move ODM_GetRightChnlPlaceforIQK()

ODM_GetRightChnlPlaceforIQK() is only called in one place, so move the
call to the single location and make the file static.

This lets us remove the hal/HalPhyRf.c and include/HalPhyRf.h files as
they are now empty.

Link: https://lore.kernel.org/r/20210730092417.1014392-3-gregkh@linuxfoundation.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>