MFV r346563:
Update wpa_supplicant/hostapd 2.7 --> 2.8
Upstream documents the following advisories:
- https://w1.fi/security/2019-1/sae-side-channel-attacks.txt
- https://w1.fi/security/2019-2/eap-pwd-side-channel-attack.txt
- https://w1.fi/security/2019-3/sae-confirm-missing-state-validation.txt
- https://w1.fi/security/2019-4/eap-pwd-missing-commit-validation.txt
- https://w1.fi/security/2019-5/eap-pwd-message-reassembly-issue-\
with-unexpected-fragment.txt
Relnotes: yes
MFC after: 1 week (or less)
Security: CVE-2019-9494, VU#871675, CVE-2019-9495, CVE-2019-9496,
CVE-2019-9497, CVE-2019-9498, CVE-2019-9499
