[PATCHv2 0/6] Rework the BLK symbol usage in Kconfig

[Tom Rini]

Hey all,

One problem we have today is how the BLK symbol is set and used in
Kconfig files. Part of the challenge is that we use it as a gating
symbol for "we have a block device" and also for "enable block device
library code". What this series does is move to always use "select BLK"
by block drivers (a few were and a few others had it the inverse) and
then "depends on BLK" for functionality that needs a block device
present. The end result of this series is that a number of platforms
which had disabled EFI_LOADER now don't ask for it (they have no block
device) and espresso7420 has a regression about MMC support fixed. With
v2 of this I've picked up the review tags from v1 and also reworded the
body of the commit in the first patch.

-- 
Tom