Specify firmware partition format by compatible string.
formats in ramips:
- denx,uimage
- tplink,firmware
- seama
It's unlikely but the firmware splitting might not work any longer for
the following boards, due to a custom header:
- EX2700: two uImage headers
- BR-6478AC-V2: edimax-header
- 3G-6200N: edimax-header
- 3G-6200NL: edimax-header
- BR-6475ND: edimax-header
- TEW-638APB-V2: umedia-header
- RT-N56U: mkrtn56uimg
But it rather looks like the uImage splitter is fine with the extra
header.
The following dts are not touched, due to lack of a compatible string in
the matching firmware splitter submodule:
- CONFIG_MTD_SPLIT_JIMAGE_FW
DWR-116-A1.dts
DWR-118-A2.dts
DWR-512-B.dts
DWR-921-C1.dts
LR-25G001.dts
- CONFIG_MTD_SPLIT_TRX_FW
WCR-1166DS.dts
WSR-1166.dts
- CONFIG_MTD_SPLIT_MINOR_FW
RBM11G.dts
RBM33G.dts
- CONFIG_MTD_SPLIT_LZMA_FW
AR670W.dts
- CONFIG_MTD_SPLIT_WRGG_FW
DAP-1522-A1.dts
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>