Change in flashrom[master]: bitbang-spi.c: support clock polarity and phase

[Edward O'Callaghan (Code Review)]

Attention is currently required from: Xiang Wang, Stefan Reinauer, Angel Pons.
Edward O'Callaghan has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/49255 )

Change subject: bitbang-spi.c: support clock polarity and phase
......................................................................

Patch Set 14:

(2 comments)

File bitbang_spi.c:

https://review.coreboot.org/c/flashrom/+/49255/comment/5eda1d7a_c06cf981 
PS12, Line 208: 
              : 	if (parse_spi_mode(&cpol, &cpha))
              : 		return ERROR_FLASHROM_BUG;
> If the parameter mode is not set, parse_spi_mode returns 0. […]

Where are they initialised to 0?

Also you may as well update the man page in this commit then for completeness.

File bitbang_spi.c:

https://review.coreboot.org/c/flashrom/+/49255/comment/e5c5dd6e_877c30ae 
PS14, Line 41: 
             : static int cpol; /* Clock Polarity */
             : static int cpha; /* Clock Phase */
sounds like you want,

```
static int cpol = 0; /* Clock Polarity */
static int cpha = 0; /* Clock Phase */
```