[Bugfix][API-1426] Pull down gpio24 before sleep

Only Configure: No
Affected branch: GSW3.0-No-Connman
Affected module: ethernet,low-power
Is it affected on both ZXIC and MTK: only MTK
Self-test: Yes
Doc Update: No

Change-Id: I3d20fee93fd4377a69d0bc68f1c0834f6c4925e2
2 files changed