dsp: Add size check for afe set and get functions

In afe_get_cal_sp_th_vi_param and afe_set_cal_sp_th_vi_cfg
functions, data size check is not present which might lead to
out of bounds access. Add size checks to fix the same.

Change-Id: I99eca6065e6f5a050527f1bfce2bfcba28123b53
Signed-off-by: Aditya Bavanari <abavanar@codeaurora.org>