Change in flashrom[master]: ni845x_spi: handle PROGRAMFILES(X86) env var properly

[Nico Huber (Code Review)]

Attention is currently required from: Miklós Márton, Angel Pons.
Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/56636 )

Change subject: ni845x_spi: handle PROGRAMFILES(X86) env var properly
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Patch Set 1: Code-Review+2

(3 comments)

Patchset:

PS1:
> My build VM used during the review was a Windows 7 based one, and now I built a new VM with Windows  […]

Ack

File Makefile:

https://review.coreboot.org/c/flashrom/+/56636/comment/cf981d4a_599b2807 
PS1, Line 750: X
> Yes env lists with upper case X.

Ack

https://review.coreboot.org/c/flashrom/+/56636/comment/5f135ec5_0369563b 
PS1, Line 753: {PROGRAMFILES}
No need to use curly braces here. Also doesn't hurt, though.