devicetree: Rename unused parameter to passthru

The actual use of the parameter max is to keep track of PCI bus
number while recursively scanning PCI bridges or PCI-e rootports.

Neither CPU, SMBus, LPC or other static buses are involved in this
enumeration, but the way bridge operations were originally designed
forced to pass this argument thru unrelated functions.

Follow-up removes these once the function prototype gets fixed.

Change-Id: Idbc9c515a362c571a1798bb36972058b309c2774
Signed-off-by: Kyösti Mälkki <>
Tested-by: build bot (Jenkins)
Reviewed-by: Timothy Pearson <>
11 files changed