Update VTS SupplicantStaIfaceAidlTest#SetCountryCode to US

Bug: 323694622
Bug: 334053791
Test: VTS SupplicantStaIfaceAidlTest
(cherry picked from https://android-review.googlesource.com/q/commit:73e55bdbcf03a990fafd06abc585e1d2521b9c18)
Merged-In: Idad4127ce26188145c7b07d60d5e6ce40a80aa5b
Change-Id: Idad4127ce26188145c7b07d60d5e6ce40a80aa5b
1 file changed