dsp: Change condition for cal_data for v_vali_param

V-Validation is not working due to different
size for cal_data and data_size. This is expected as
same callbacks are used for ftm and v validation.
Change condition to ensure data_size is less than
or equal to size of cal_data.

Change-Id: I78b4e6778de9cfa5f95830fc6d48b84e608ba3a5
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>