Fixed deprecation messages

Author: DenisBakhvalov

clang/include/clang/Driver/Options.td

@@ -4375,7 +4375,7 @@ defm sycl_esimd: BoolFOption<"sycl-explicit-simd",
   Group<clang_ignored_legacy_options_Group>,
   LangOpts<"SYCLExplicitSIMD">, DefaultFalse,
   PosFlag<SetTrue, [CC1Option], "Enable">, NegFlag<SetFalse, [], "Disable">,
-  BothFlags<[NoArgumentUnused, CoreOption], "SYCL explicit SIMD extension.">>;
+  BothFlags<[NoArgumentUnused, CoreOption], " SYCL explicit SIMD extension. (deprecated)">>;
 defm sycl_early_optimizations : OptOutFFlag<"sycl-early-optimizations", "Enable", "Disable", " standard optimization pipeline for SYCL device compiler", [CoreOption]>;
 def fsycl_dead_args_optimization : Flag<["-"], "fsycl-dead-args-optimization">,
   Group<sycl_Group>, Flags<[NoArgumentUnused, CoreOption]>, HelpText<"Enables "

sycl/doc/UsersManual.md

@@ -55,8 +55,8 @@ and not recommended to use in production environment.
 
 **`-f[no-]sycl-explicit-simd`** [DEPRECATED]
 
-    Enables/Disables SYCL explicit SIMD extension.
-    Disabled by default. Is not used anymore.
+    The option was used to enable/disable SYCL explicit SIMD extension.
+    Not used anymore.
 
 ## Optimization options