environment: support env on at24 eeprom
unprotect(), erase() and protect() return EOPNOTSUPP errno code
for at24 I2C eeproms, so envfs_save() doesn't store data
to these eeproms without this patch.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
1 parent 2803b25 commit cf0dd1196bf07942b55a120bed34e565e07be97a
@Antony Pavlov Antony Pavlov authored on 27 Nov 2015
Sascha Hauer committed on 1 Dec 2015
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common/environment.c