[coreboot] [PATCH] nvramtool: fixed working with files only on a non-coreboot system

[Mathias Krause]

nvramtool tried to get the CMOS layout from the coreboot option table
even when told to take a layout file. This patch fixes that case by
slightly changing the order of evaluating the specific options. Now
almost all combinations are valid (CMOS content from NVRAM/CBFS/file
with CMOS layout from CBFS/option table/layout file).

Additionally I fixed some white space issues (spaces to tabs) and throw
in some newlines to aid readability of the code.

Signed-off-by: Mathias Krause