Add note to NEWS about kernel headers dependency on risc-v

It was discovered that RISC-V 64-bit still needs kernel headers >= 5.0
to be installed to build correctly:

https://gitlab.com/kubu93/toolchains-builder/-/jobs/422726962

Fix up the NEWS item to make that clear.

diff --git a/NEWS b/NEWS
index 64282d4..b32280d 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -134,7 +134,8 @@ Deprecated and removed features, and other changes affecting compatibility:
 Changes to build and runtime requirements:
 
 * It is no longer necessary to have recent Linux kernel headers to build
-  working (non-stub) system call wrappers.
+  working (non-stub) system call wrappers on all architectures except 64-bit
+  RISC-V.  64-bit RISC-V requires a minimum kernel headers version of 5.0.
 
 * The ChangeLog file is no longer present in the toplevel directory of the
   source tree.  ChangeLog files are located in the ChangeLog.old directory as