Currently both Skylake and SOF platform driver enumerate same HDA
machine driver 'skl_hda_dsp_generic' for HDA external codec. This
commit removes HDA external codec support on Skylake platform so the
machine driver will be used by SOF only.

Signed-off-by: Brent Lu <[email protected]>

Move I2S mach's topology name fixup code to the end of machine driver
enumeration flow so HDA mach could also use same code to fixup its
topology file name as well. No functional change in this commit.

Signed-off-by: Brent Lu <[email protected]>

Remove SDW mach's topology name fixup code and use the code in
hda_machine_select() to fixup its topology file name. No functional
change in this commit.

Compared with I2S/HDA mach, SDW mach always fixup topology file name
with dmic num without using DMIC quirk flag and pass topology name
with file extension to SOF driver. Therefore, we add extra code to
remove file extension if it exists.

Signed-off-by: Brent Lu <[email protected]>