generator: yml: Update stable anchor to 6.16

This is the latest stable release.

This applies commit 1caa41a ("generator: yml: Disable RISC-V full LTO
build on mainline with LLVM 14") to stable, now that the breaking asm
goto changes are there.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>

Author: nathanchance

generator/yml/0004-trees.yml

@@ -1,7 +1,7 @@
 trees:
   - &mainline         {git_repo: *mainline-url, git_ref: master,              name: mainline}
   - &next             {git_repo: *next-url,     git_ref: master,              name: next}
-  - &stable           {git_repo: *stable-url,   git_ref: linux-6.15.y,        name: stable}
+  - &stable           {git_repo: *stable-url,   git_ref: linux-6.16.y,        name: stable}
   - &stable-6_12      {git_repo: *stable-url,   git_ref: linux-6.12.y,        name: "6.12"}
   - &stable-6_6       {git_repo: *stable-url,   git_ref: linux-6.6.y,         name: "6.6"}
   - &stable-6_1       {git_repo: *stable-url,   git_ref: linux-6.1.y,         name: "6.1"}

generator/yml/0009-llvm-14.yml

@@ -134,7 +134,6 @@
   - {<< : *ppc64le_fedora,    << : *stable,           << : *llvm_full,       boot: true,  << : *llvm_14}
   - {<< : *ppc64le_suse,      << : *stable,           << : *llvm_full,       boot: true,  << : *llvm_14}
   - {<< : *riscv,             << : *stable,           << : *llvm_full,       boot: true,  << : *llvm_14}
-  - {<< : *riscv_lto_full,    << : *stable,           << : *llvm_full,       boot: true,  << : *llvm_14}
   - {<< : *riscv_lto_thin,    << : *stable,           << : *llvm_full,       boot: true,  << : *llvm_14}
   - {<< : *riscv_allmod,      << : *stable,           << : *llvm_full,       boot: false, << : *llvm_14}
   - {<< : *riscv_allmod_lto,  << : *stable,           << : *llvm_full,       boot: false, << : *llvm_14}