buglabs-scripts/local.conf: Bump number for PARALLEL_MAKE and BB_THREADS.
buglabs-scripts/local.conf: Bump number for PARALLEL_MAKE and BB_THREADS.

This makes sure our 8 cores are actually well used on the buildhost.

buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs,buglabs/oe-buglabs