This commit adds support for pensando asic called ELBA. ELBA is used in pci based cards and in smartswitches.
#### Why I did it
This commit introduces pensando platform which is based on ELBA ASIC.
##### Work item tracking
- Microsoft ADO **(number only)**:
#### How I did it
Created platform/pensando folder and created makefiles specific to pensando.
This mainly creates pensando docker (which OEM's need to download before building an image) which has all the userspace to initialize and use the DPU (ELBA ASIC).
Output of the build process creates two images which can be used from ONIE and goldfw.
Recommendation is use to use ONIE.
#### How to verify it
Load the SONiC image via ONIE or goldfw and make sure the interfaces are UP.
##### Description for the changelog
Add pensando platform support.
Why I did it
docker folder size on 202305 image is more than 1.5G. larger than the max size of docker ramfs size.
Work item tracking
Microsoft ADO (number only):
24969589
How I did it
Update the docker ramfs size from 1500M to 2500M
How to verify it
Boot 202305 image.
Introduce new sonic-buildimage images for Broadcom DNX ASIC family.
sonic-broadcom-dnx.bin
sonic-aboot-broadcom-dnx.swi
How I did it
NO CHANGE to existing make commands
make init; make configure PLATFORM=broadcom; make target/sonic-aboot-broadcom.swi; make target/sonic-broadcom.bin
The difference now is that it will result in new broadcom images for DNX asic family as well.
sonic-broadcom.bin, sonic-broadcom-dnx.bin
sonic-aboot-broadcom.swi, sonic-aboot-broadcom-dnx.swi
Note: This PR also adds support for Broadcom SAI 5.0 (based on 1.8 SAI ) for DNX based platform + changes in platform x86_64-arista_7280cr3_32p4 bcm config files and platform_env.conf files
Images built from master branch and installed on devices where we mount /var/lib/docker in RAM (because the HDD is small) were failing to boot properly. The Docker service failed to start because /var/lib/docker was filled to 100%. This is due to the increase in total number of containers in the image.
As of today, /var/lib/docker contains 1.3 GB of data. Therefore, this PR increases the size of the ramdisk to 1.5 GB to accommodate all the containers. Example output below from an Arista-7050-QX32 SKU:
```
admin@sonic:~$ df -h
Filesystem Size Used Avail Use% Mounted on
...
tmpfs 1.5G 1.3G 172M 89% /var/lib/docker
...
```
ARM Architecture support in SONIC
make configure platform=[ASIC_VENDOR_ARCH] PLATFORM_ARCH=[ARM_ARCH]
SONIC_ARCH: default amd64
armhf - arm32bit
arm64 - arm64bit
Signed-off-by: Antony Rheneus <arheneus@marvell.com>
