configs: phycore-imx8mm_defconfig: enable CMD_ERASEENV

Enable erasing environment with eraseenv command.

Signed-off-by: Yannic Moog <y.moog@phytec.de>

Author: ymoog

configs/phycore-imx8mm_defconfig

@@ -48,6 +48,7 @@ CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="u-boot=> "
 # CONFIG_CMD_EXPORTENV is not set
 # CONFIG_CMD_IMPORTENV is not set
+CONFIG_CMD_ERASEENV=y
 # CONFIG_CMD_CRC32 is not set
 CONFIG_CMD_EEPROM=y
 CONFIG_SYS_I2C_EEPROM_ADDR_LEN=2