OpenSBI v1.6 Released

[Anup Patel]

Hi All,

The OpenSBI v1.6 is now available on GitHub at:
https://github.com/riscv-software-src/opensbi/releases

This release has:

* Support for parsing riscv,isa-extensions DT property
* Setup serial console very early in cold boot path
* Support for multiple heaps and aligned memory allocation
* Support for shadow stacks (Zicfiss) ISA extension
* Support for landing pads (Zicfilp) ISA extension
* Support for per-domain data
* Support for double-trap (Smdbltrp/Ssdbltrp) ISA extensions
* DT-based configurable heap size
* Common fdt_driver and helpers for driver initialization
* Support for SBI PMU raw event v2 (Experimental)
* Simple FDT based mailbox driver framework
* RPMI shared memory transport driver (Experimental)
* RPMI system reset driver (Experimental)
* Simple FDT based system suspend driver framework
* RPMI system suspend driver (Experimental)
* Simple FDT based HSM driver framework
* RPMI HSM driver (Experimental)
* Simple FDT based CPPC driver framework
* RPMI CPPC driver (Experimental)
* SBI Message Proxy (MPXY) extension (Experimental)
* Simple FDT based MPXY driver framework
* Common RPMI client driver for MPXY (Experimental)
* Support for vector misaligned load/store

Overall, this release adds more ISA extensions, drivers, and
other improvements.

Many thanks to everyone who has contributed to this release.

Best Regards,
Anup Patel