Revert "omap4-common: fix wake on unplug"

This seems to cause SODs.

This reverts commit 9805968b21d58023668553219a50931900c567b6.

Change-Id: I2cfbf44311dbe8b275679f976c592cb66667b2ae
omap4-common: fix the power-key

Add handling of a missing powerkey-state when the phone is in
deep sleep which could result in the key-press to be partially
ignored. Additionally increase wakelock-timeouts for the powerkey-
wakelock.

Change-Id: Ibccfdbc866610f067cbb563cf7fc9ecf7a7e9a03