[Arista] Generated pcie.yml for x86_64-arista_7170_64c (#7906)

Signed-off-by: Roman Savchuk <romanx.savchuk@intel.com>
Why I did it
Platform pcie configuration file doesn't exist for x86_64-arista_7170_64c

How I did it
Generate pcie.yml

How to verify it
Started pcie daemon (pcied RUNNING pid 63, uptime 0:00:19)

Author: roman_savchuk