Revert "Fix power_off error"

This reverts commit 61e2cb6f91f11d3ee7475f536c1c8ce48f73ba43.
Revert "Update kernel 3.4.40 to 3.4.88"

This reverts commit 8d478e5566dde66bf64e73f800adc739c64d67b8.
Revert "Update kernel 3.4.20 to 3.4.40"

This reverts commit eb40cc7e4d363326ac20ce0248c60e68a0e9054d.
Revert "Update kernel 3.4.2 to 3.4.20"

This reverts commit e75fc20eb9dc708749de18665635428adbb0fa96.
Revert "Update kernel to 3.4.2"

This reverts commit d6db650a7cd1b5e5741772debfc671007acc35eb.
Revert " Update kernel v3.4 to v3.4.1"

This reverts commit 42a4e6505a2bab7f5aaaad1d33dc9c45e5e08b7c.