[U-Boot] [PATCH v7 0/2] add command env erase

[Frank Wunderlich]

sometimes it is needed to erase the non-volatile environment
e.g. for boot-up with builtin-environment or after resizing env

this series add basic functionality for erasing environment from
storage as a first storage-driver mmc is introduced, other needs to be added
later

changes since v6:
 - fix whitespace around errmsg

changes since v5:
 - don't use the CMD_RET_ macros in erase_env
 - remove mmc-checks (!mmc + mmc_getwp) and add init_mmc_for_env

changes since v4:
 - rebased to 2019.07-rc4
 - changed handling with CONFIG_ENV_OFFSET_REDUND (more similar to saveenv)
 - quashed last 2 commits to get 2-parts patchset

Frank Wunderlich (2):
  env: register erase command
  env: mmc: add erase-function

 cmd/Kconfig           |  8 +++++++
 cmd/nvedit.c          | 20 +++++++++++++++++
 env/env.c             | 30 +++++++++++++++++++++++++
 env/mmc.c             | 51 +++++++++++++++++++++++++++++++++++++++++++
 include/environment.h | 17 +++++++++++++++
 5 files changed, 126 insertions(+)

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2.17.1