[SYCL][Driver][FPGA] Remove support for FPGA related options (#16864)

Removes support for any FPGA related options and any options that use
FPGA specific arguments. Upon usage of any of these options, a specific
error will be emitted:

> clang++ -fintelfpga file.cpp
clang++: error: option '-fintelfpga' is not supported and has been
removed from the compiler. Please see the compiler documentation for
more details

The following options are being handled:

- -fintelfpga
- -fsycl-targets=spir64_fpga[-unknown-unknown]
- -fsycl-link=early/image
- -Xsycl-target-backend=spir64_fpga "opt"
- -reuse-exe=arg
- -fsycl-help=fpga

This mainly removes support of the options as specified, subsequent
cleanup of driver behaviors will be done in a later change.

Due to the broad impact of these changes, all associated LIT tests have
been updated/removed.

Associated issue:  #16929

Author: mdtoguchi

clang/include/clang/Basic/DiagnosticDriverKinds.td

@@ -22,6 +22,9 @@ def err_drv_unsupported_option_argument : Error<
   "unsupported argument '%1' to option '%0'">;
 def err_drv_unsupported_option_argument_for_target : Error<
   "unsupported argument '%1' to option '%0' for target '%2'">;
+def err_drv_unsupported_opt_removed : Error<
+  "option '%0' is not supported and has been removed from the compiler. Please "
+  "see the compiler documentation for more details">;
 def err_drv_unknown_stdin_type : Error<
   "-E or -x required when input is from standard input">;
 def err_drv_unknown_stdin_type_clang_cl : Error<

clang/include/clang/Driver/Driver.h

@@ -617,7 +617,11 @@ class Driver {
 
   /// getSYCLDeviceTriple - Returns the SYCL device triple for the
   /// specified subarch
-  llvm::Triple getSYCLDeviceTriple(StringRef TargetArch = "spir64") const;
+  // TODO: Additional Arg input parameter is for diagnostic output information
+  // regarding FPGA support removal. This should be cleaned up in a future
+  // release.
+  llvm::Triple getSYCLDeviceTriple(StringRef TargetArch = "spir64",
+                                   const llvm::opt::Arg *Arg = nullptr) const;
 
   /// PrintActions - Print the list of actions.
   void PrintActions(const Compilation &C) const;