added burn raw file option

[srdgame]

使用wl烧写 spinand时，如果文件是一个包含ubi分区的镜像文件(我们的情况是一个openwrt的spinand ubi镜像)，MiniLoaderAll.bin (RK3506)就会展开该ubi镜像(将ubi分区表写入到最后两个PEB). 由于我们的镜像有UBI EOF marker，导致Linux Kernel会忽略掉后面所有PEB，也就找不到最后两个PEB上的分区表。 最终产生Linux Kernel找不到ubi分区而启动失败:

[   24.374752] ubi0 error: ubi_attach: PEB 183 ubi_io_is_bad:0
[   24.388463] ubi0 error: ubi_attach: PEB 183 ubi_io_read_ec_hdr:0
[   24.394906] UBI: EOF marker found, PEBs from 183 will be erased
[   24.402259] ubi0: scanning is finished
[   24.406410] ubi0 error: ubi_read_volume_table: the layout volume was not found
[   24.414796] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd1, error -22
[   24.422456] UBI error: cannot attach mtd1
[   24.427019] clk: Disabling unused clocks
[   24.431527] ALSA device list:
[   24.434719]   No soundcards found.
[   24.438567] dw-apb-uart ff0a0000.serial: forbid DMA for kernel console
[   24.445843] /dev/root: Can't open blockdev
[   24.450284] VFS: Cannot open root device "" or unknown-block(0,0): error -6
[   24.457760] Please append a correct "root=" boot option; here are the available partitions:
[   24.466737] 1f00            2048 mtdblock0 
[   24.466746]  (driver?)
[   24.473774] 1f01          260096 mtdblock1 
[   24.473781]  (driver?)
[   24.480798] b300         3932160 mmcblk0 
[   24.480805]  driver: mmcblk
[   24.488091]   b301           16384 mmcblk0p1 4b4e4c54-01
[   24.488097] 
[   24.495442]   b302          102400 mmcblk0p2 4b4e4c54-02
[   24.495451] 
[   24.502760] List of all bdev filesystems:
[   24.507059]  ext3
[   24.507064]  ext2
[   24.509148]  ext4
[   24.511209]  squashfs
[   24.513269]  f2fs
[   24.515700] 
[   24.519357] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[   24.528229] CPU0: stopping
[   24.528237] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.6.144 #0
[   24.528244] Hardware name: Rockchip (Device Tree)
[   24.528255]  unwind_backtrace from show_stack+0xb/0xc
[   24.528279]  show_stack from dump_stack_lvl+0x2b/0x34
[   24.528298]  dump_stack_lvl from do_handle_IPI+0xab/0xcc
[   24.528309]  do_handle_IPI from ipi_handler+0x13/0x18
[   24.528318]  ipi_handler from handle_percpu_devid_irq+0x47/0xd0
[   24.528332]  handle_percpu_devid_irq from handle_irq_desc+0x25/0x30
[   24.528343]  handle_irq_desc from gic_handle_irq+0x55/0x64
[   24.528352]  gic_handle_irq from generic_handle_arch_irq+0x27/0x34
[   24.528364]  generic_handle_arch_irq from __irq_svc+0x71/0xb6
[   24.528374] Exception stack(0xc0c01f28 to 0xc0c01f70)
[   24.528383] 1f20:                   00000003 0079f6a4 00000001 c030e481 00000000 c0c04d28
[   24.528391] 1f40: c0c08440 c0c04d64 00000000 00000000 c0c04cc8 c0c082a8 00000000 c0c01f78

增加raw bin写入(RWMETHOD_LBA)，避免镜像被MiniLoaderAll.bin处理我们的镜像。