qcacmn: Rectify the API wlan_reg_is_6ghz_psc_chan_freq

While checking if a channel frequency is 6Ghz PSC frequency within
wlan_reg_is_6ghz_psc_chan_freq, check the remainder of the expression,
instead of quotient.

Change-Id: Ia40d7cd8485f9f8eb90222f9a3454d46e681681b
CRs-Fixed: 2572914
1 file changed