Version 20230331

March 2023. Summary of changes for version 20230331:

This release is available at https://acpica.org/downloads

0) Global changes:

Update all copyright notices to the year 2023. This effects all source modules, as well as utility signons.
Add OS-specific support for Zephyr RTOS.
Fix miscellaneous code that accesses various objects.
Remove some dead code.
Add C “Flexible Array” support.
Add support for 64 bit LoongArch compilation.
Add first batch of RISC-V related definitions.
Performed a global automated update to remove tabs, fix indentation issues, etc.

1) ACPICA kernel-resident subsystem:

hwvalid: Drop port I/O validation.

2) ACPICA tools and utilities:

iASL: Added full macro support in the preprocessor. Example:
#define ABCD(a,b,c,d) a+b+c-d

Known macro support limitations (at this time):
No support for multi-line #define macros (backslash continuation lines)
No support for the C-style ternary operator
No support for the stringizing operator (#)
No support for the concatenation (token pasting) operator (##)
No support for variable number of macro arguments

Add support for AMD Secure Processor Table (ASPT) version 1.
Add support for Arm's MPAM ACPI table version 2.
ACPI 6.5: MADT: add support for trace buffer extension in GICC.
Headers: Delete bogus NodeArray array of pointers from AEST table.
PHAT table support is still ongoing.