buildroot

wpa_supplicant: fix upstream URL

wpa_supplicant project URL has been changed to w1.fi/wpa_supplicant.
The old domain epitest.fi has expired.

Signed-off-by: Alexander Mukhin <alexander.i.mukhin@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit 38e36cd0e1ec55743766e48564d952e38ff40113)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>