binder: Implement Set/Get network params (Part 1)

Implement the following Set/Get methods:
1. SSID
2. BSSID
3. SetScanSSID

BUG: 1252274
Change-Id: Iac4be5892cd5b8c0f963b70efd36727812633907
TEST: Ran 'wpa_supplicant_binder_test'
Signed-off-by: Roshan Pius <rpius@google.com>
1 file changed