[L] Change in flashrom[master]: Add initial CH347T SPI programmer

[Angel Pons (Code Review)]

Attention is currently required from: qianfan, Nicholas Chin, Angel Pons.

Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/70529 )

Change subject: Add initial CH347T SPI programmer
......................................................................

Patch Set 5:

(4 comments)

File ch347t_spi.c:

https://review.coreboot.org/c/flashrom/+/70529/comment/ca704c2c_a8d4666c 
PS5, Line 94: typedef uint32_t __le32;
Why the typedefs?

https://review.coreboot.org/c/flashrom/+/70529/comment/699d3264_064dd323 
PS5, Line 110: } __attribute__((packed));
This doesn't seem to be portable.

https://review.coreboot.org/c/flashrom/+/70529/comment/f4213933_f6424ca9 
PS5, Line 169: if (n > CH347_MAX_DATA_WRITE)
             : 			n = CH347_MAX_DATA_WRITE;
This doesn't seem to be a good idea...

https://review.coreboot.org/c/flashrom/+/70529/comment/402d8dca_bf63b31c 
PS5, Line 279: 	memset(&csctrl, 0, sizeof(csctrl));
Why not use an initialiser?

struct ch347_spi_csctrl_param csctrl = { 0 };