Change in flashrom[master]: lspcon_i2c_spi: support a devpath option

[Angel Pons (Code Review)]

Attention is currently required from: Peter Marheine.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/51967 )

Change subject: lspcon_i2c_spi: support a devpath option
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Patch Set 1: Code-Review+1

(3 comments)

File i2c_helper_linux.c:

https://review.coreboot.org/c/flashrom/+/51967/comment/45504807_c0973a47 
PS1, Line 46: 		goto err;
`goto` isn't necessary here, just return `fd`.

https://review.coreboot.org/c/flashrom/+/51967/comment/41a9c15d_338637ac 
PS1, Line 54: 		goto err;
Same here, just return `err`.

https://review.coreboot.org/c/flashrom/+/51967/comment/a23a2a96_c0d8332c 
PS1, Line 58: 	return ret ? ret : fd;
And return `fd` here.