bump PR/SRCREV for bug20-linaro to get defconfig changes.
bump PR/SRCREV for bug20-linaro to get defconfig changes.

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