ASoC: qcom: topology: Constify pointed topology and vendor structs

ASoC: qcom: topology: Constify pointed topology and vendor structs

Several functions in topology.c receive pointers to 'struct
snd_soc_tplg_vendor_array' and 'struct snd_soc_tplg_private', and do not
modify their contents.  Constify the pointers for self-explanatory code
(pointed memory is not modified by the function) and a bit safer code.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20251219-b4-container-of-const-asoc-qcom-v2-1-05fd2ecc06fe@oss.qualcomm.com
Signed-off-by: Mark Brown <broonie@kernel.org>