enabling zram swap and bringing in init.rc config

this patch adds zram 256M swap space, which greatly
improves the experience on my device; zram swap is
highly effective on the medfield design due to high
memory bandwidth, compared to ARM processors

this patch brings init.*.rc bits from the original
9.8.2l-50_smi-29.1359956748 firmware, making the kernel
work better with the stock firmware