imx-bbu-nand-fcb: erase on demand
Instead of erasing the whole partition on update entry, erase the areas
separately when we actually want to write them. This is done as a step
towards robust update.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
1 parent 14fd7e9 commit 678617ecaf30d04a7ce15295e0816122320ba498
@Sascha Hauer Sascha Hauer authored on 4 Mar 2016
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common/imx-bbu-nand-fcb.c