Why I did it
Update Makefile, so it does the following:
For a given platform, verify if platform/checkout/.ini exists and hence run the platform/checkout/template.j2. This allows platform code to be checked out during the 'make configure' stage.

How I did it
git clone git@github.com:Azure/sonic-buildimage.git
mkdir platform/cisco-8000

make init
make configure PLATFORM=cisco-8000
make all

Includes below commits:
```
43b5e1a 2021-08-04 | CPU Spike because of redundant and flooded keyspace notifis handled (#230) [Vivek Reddy]
4d6bb79 2021-08-02 | Non-block reading counters to tolerate corrupted/delayed counters in COUNTERS_DB (#229) [Qi Luo]
```

Why I did it
To support "pcied" and "pcieutil" commands in DellEMC Z9332f.

How I did it
Add 'pcie.yaml' in device/dell/[PLATFORM]/ directory.

How to verify it
Execute "pcieutil check" command.
Logs: UT_logs.txt