xrp-20210217: XRP release 20210217:

- support examples running on NX DSP;
- support hosted configurations without direct DSP memory mapping;
- support linux kernels up to 5.4;
- fix crash in generic xrp kernel driver on kernels with CFI (control
  flow integrity).

xrp-20191107: XRP release 20191107:

- new XRP API call xrp_wait_any;
- support linux kernels up to 5.3;
- fix crash in generic xrp kernel driver on X86 with CONFIG_OF enabled;
- generate LSP for DSP example binaries.

xrp-20190520: XRP release 20190520:

- multiple prioritized queues support;
- XOS support for DSP firmware;
- new simple-xos port.

xrp-20181022: XRP release 20181022:

- move all documentation to doc;
- drop status from xrp_*_{retain,release} functions;
- don't require sim-shmem node in the device tree for standalone ELF
  configurations;
- enable experimental support for cached shared memory on the DSP and
  expose xrp_device_enable_cache;
- introduce software-assisted edge IRQ mode for the simple hardware;
- add XEA3 support for the simple hardware;
- various bugfixes.