tree ed260473b8293a6b5b2df627919bc9bfc1dc20cc
parent a307089cb7b562ab7c6d8f14142b549510821978
author Matt Spinler <spinler@us.ibm.com> 1591201705 -0500
committer Matt Spinler <spinler@us.ibm.com> 1592573512 +0000

PEL: devcallouts: Extract search keys

In order to find the callouts for a device path, the search keys need to
be pulled out of the device path.

The keys are:
* I2C - bus and address
* FSI - link numbers
  - Multiple link hops separated by dashes like "0-1"
* SPI - bus
* FSI-I2C - link numbers and I2C bus and address
* FSI-SPI - link numbers and SPI bus number

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I1f8bf975fb34a61ea3fa2ac5b397afdc73cd799b