find_mtd_part() outputs /dev/mtdblockX, to which fw_setenv cannot
write, "/dev/mtd$(find_mtd_index '<vol name>')" could be used instead.
The envsize should also be changed to 0x1000 to make the CRC checksum
valid and the env block recognized by the uboot-envtools, but the
flash sector size remains 0x10000, otherwise the env block will be
readable but not writable.
The "read-only" mark within device tree is also removed.
Signed-off-by: Edward Chow <equu@openmail.cc>
Link: https://github.com/openwrt/openwrt/pull/23121
Signed-off-by: Robert Marko <robimarko@gmail.com>
65a57d7159