rust: update 1.59.0 -> 1.60.0

Rust has been upgraded to rust-1.60.0 that uses LLVM 14.

Please refer the following link for more detailed features.
https://blog.rust-lang.org/2022/04/07/Rust-1.60.0.html
https://github.com/rust-lang/rust/blob/master/RELEASES.md

(From OE-Core rev: 786a9a66486cf179ee4c9e295569fcd8c37fef78)

Signed-off-by: pgowda <pgowda.cve@gmail.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/rust/rust-llvm/0003-llvm-fix-include-benchmarks.patch

@@ -0,0 +1,25 @@
+Subject: LLVM_INCLUDE_BENCHMARKS with llvm 14.0.1 failing to build
+
+https://github.com/llvm/llvm-project/issues/54941
+
+The LLVM_INCLUDE_BENCHMARKS is turned OFF to fix the build error as
+per the discussions in the above link. We will work on the issue and
+replace the workaround with actual fix once committed in LLVM.
+
+Please refer the following link for more discussions on the issue:-
+https://github.com/rust-lang/rust/issues/96054
+
+Upstream-Status: Pending
+Signed-off-by: Pgowda <pgowda.cve@gmail.com>
+
+--- a/llvm/CMakeLists.txt	2022-04-22 00:45:30.543445478 -0700
++++ b/llvm/CMakeLists.txt	2022-04-22 00:45:42.095232974 -0700
+@@ -615,7 +615,7 @@ option(LLVM_INCLUDE_GO_TESTS "Include th
+ 
+ option(LLVM_BUILD_BENCHMARKS "Add LLVM benchmark targets to the list of default
+ targets. If OFF, benchmarks still could be built using Benchmarks target." OFF)
+-option(LLVM_INCLUDE_BENCHMARKS "Generate benchmark targets. If OFF, benchmarks can't be built." ON)
++option(LLVM_INCLUDE_BENCHMARKS "Generate benchmark targets. If OFF, benchmarks can't be built." OFF)
+ 
+ option (LLVM_BUILD_DOCS "Build the llvm documentation." OFF)
+ option (LLVM_INCLUDE_DOCS "Generate build targets for llvm documentation." ON)