BOM: Proffieboard v2.2 components and alternative parts.

The list of components onboard a Proffieboard v2.2 can be found here: https://docs.google.com/spreadsheets/d/18MwtF8ENlrQoEh_lPH9iURkPmyv8qekj8NvmkMRsl70/edit?usp=sharing

A partial part map of their locations can be found here: https://fredrik.hubbe.net/lightsaber/v5/partmap.html?fbclid=IwAR1_g4TkNHi3h8WSPA-pODOFWg01KM5VeTi8bBxLoGIc_U53UuPAnPjfM_M

As of late, a couple of the parts are coming up as either unavailable or only available in bulk.

This can serve as a running tab of alternative parts:

Designator	Package	Qty	Designation	Original Part	Alternative part
U40	uQFN6	1	HSP061-2M6	https://tinyurl.com/yxshduhf	https://tinyurl.com/y3bowobf
RN4	R_Array_Convex_2x0402	1	22ohm	https://tinyurl.com/y3wefl3w	https://tinyurl.com/y4n2wm5w
Q7	U-DFN2020-6	1	DMP2075UFDB	https://tinyurl.com/yy6al56l	https://tinyurl.com/y7zgkfj7
Y1	ST2012SB	1	ST2012SB 4pF	https://tinyurl.com/y5vmcru7	https://tinyurl.com/y2f5logj