m7: Update defconfig

 * Enable correct Netfilter and security options
 * Compress with LZO
 * Fix setting of CFQ as default IO scheduler
 * Set correct TCP congestion avoidance options

Change-Id: Iafc359368e572ea79f7c93fb7ed99e2707ad1ef8

Conflicts:
	arch/arm/configs/cyanogenmod_m7_defconfig

Change-Id: Iafc359368e572ea79f7c93fb7ed99e2707ad1ef8