[FS#337] ramips: Review DIR-610 A1 .dts partitions

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Victor Shyba (shyba) 

Attached to Project - LEDE Project
Summary - ramips: Review DIR-610 A1 .dts partitions
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Very Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - **maybe** related: https://bugs.lede-project.org/index.php?do=details&task_id=336

While showing my OEM logs to gkgw on IRC we saw that some partitions are preserved but could be used.
* does 'devconf' needs to be there? (devdata seems to be used: "[   12.413503] rt2800_wmac 10180000.wmac: loaded eeprom from mtd device "devdata")
Also note that while flashing back to OEM I had all my settings recovered. So "devconf" looks like a dlink conf partition.
* What about langpack?
* What's "boot env" and why don't we declare it?

OEM partition table:

F25L32PA(8c 20168c20) (4096 Kbytes)
mtd .name = raspi, .size = 0x00400000 (4M) .erasesize = 0x00010000 (64K) .numeraseregions = 0
seama skip the header
xxxxxxxx: squashfs filesystem found at offset 1376320, magic 73717368 
Creating 8 MTD partitions on "raspi":
0x000000150060-0x0000003cc060 : "rootfs"
0x000000050000-0x0000003e0000 : "upgrade"
0x000000040000-0x000000050000 : "devconf"
0x000000030000-0x000000040000 : "devdata"
0x0000003e0000-0x000000400000 : "langpack"
0x000000000000-0x000000400000 : "flash"
0x000000000000-0x000000030000 : "u-boot"
0x000000030000-0x000000038000 : "boot env"


LEDE partition table:

[    0.591730] m25p80 spi0.0: f25l32pa (4096 Kbytes)
[    0.601305] 4 ofpart partitions found on MTD device spi0.0
[    0.612294] Creating 4 MTD partitions on "spi0.0":
[    0.621908] 0x000000000000-0x000000030000 : "u-boot"
[    0.635583] 0x000000030000-0x000000040000 : "devdata"
[    0.649748] 0x000000040000-0x000000050000 : "factory"
[    0.663859] 0x000000050000-0x000000400000 : "firmware"
[    1.118452] 2 seama-fw partitions found on MTD device firmware
[    1.130191] 0x000000050040-0x000000181000 : "kernel"
[    1.143445] 0x000000181000-0x000000400000 : "rootfs"
[    1.157362] mtd: device 5 (rootfs) set to be root filesystem
[    1.168959] 1 squashfs-split partitions found on MTD device rootfs
[    1.181383] 0x000000335000-0x000000400000 : "rootfs_data"


More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=337