bcm_xboard: unblock driver initialization

Change-Id: I7f1fcddee86a776bbc8a4ae0a4d6453d2e51d487
cmdlineparts: HACK: parse rw flag

Needed for Samsung bootloader which hardcodes non-standard mtdparts.

Change-Id: I5f8b1b1da16a8b58edd24d0c7181d1b640c422f6
Update bcm21553 configs for YAFFS2/MTD

Change-Id: Iff72eae71c4553cd2545745c7628410900482128
cmdlineparts: HACK: override ro flag on boot partition

We want this partition to be writable on Samsung devices.

Change-Id: Ie397208e93300ddd713086452773716d4289ee86
bcm21553: reduce bmem allocation to 90MB

Change-Id: I5b74e4c9a1bc9e74beafbdb6c00b22c1a18700f5