With new restriction in Android, if PATH env variable doesn't have
correct path of 'am' binary, execv() fails to launch wpadebug browser
(am starts, but something seems to fail within its internal processing).
This commit is a workaround to use execve() with custom environment PATH
which includes "/system/bin;/vendor/bin" to handle the cases where
hs20-osu-client fails to launch wpadebug browser through /system/bin/am.
Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
e8581183f9