[wwwdocs] FEAT_LS64 is Optional

Regarding AArch64 Options (Using the GNU Compiler Collection (GCC)), This section is stale: ‘ls64’ Enable the 64-byte atomic load and store instructions for accelerators. This option is enabled by default for -mar

gcc-wwwdocs branch master updated. 4662147a94753cf3803426c34151573dc2d1863a

This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "gcc-wwwdocs". The branch, master has been updated via 4662147a94753cf3803426c34151573dc2d1863a (commit) from 8ce27f951e79d3c0