flo: set config_deviceHardwareKeys properly

allow for soft menu key with this commit: http://review.cyanogenmod.org/#/c/48155/

Change-Id: Id14d7613b9ee7bc58cde7b3413c2c42a13eda8a9
flo: Enable mounting of connected USB storage devices

Change-Id: Ib63613577a7eb7a326807bc0f7768459fe91a4a1

Conflicts:
	fstab.flo