[SYCL][doc][NFC] Update doc and usage of -fsycl-device-obj

[mdtoguchi]

The -fsycl-device-obj option replaces the -fsycl-use-bitcode option. The -fsycl-use-bitcode option is deprecated as well. Update the documentation to reflect this fact, also update any testing using the older option with a replacement of the new option.

The use of -fsycl-use-bitcode should also emit the proper deprecation message when used on the command line.

[steffenlarsen]

Docs changes LGTM!

[hchilama]

LGTM

[mdtoguchi]

@intel/llvm-gatekeepers, Can you look this over for merging? Failing items are not relevant to my changes.

[aelovikov-intel]

Failure log for future references/searches:

TIMEOUT: SYCL :: BitonicSortK_emu.cpp ([34](https://github.com/intel/llvm/actions/runs/5578936450/job/15176137323?pr=10432#step:17:35)1 of [35](https://github.com/intel/llvm/actions/runs/5578936450/job/15176137323?pr=10432#step:17:36)0)
******************** TEST 'SYCL :: BitonicSortK_emu.cpp' FAILED ********************
Script:
--
: 'RUN: at line 9';    /__w/llvm/llvm/toolchain/bin//clang++   -fsycl -fsycl-targets=spir64 /__w/llvm/llvm/llvm/sycl/test-e2e/ESIMD/BitonicSortK_emu.cpp -o /__w/llvm/llvm/build-e2e/ESIMD/Output/BitonicSortK_emu.cpp.tmp.out
: 'RUN: at line 10';   env CM_RT_PLATFORM=skl ONEAPI_DEVICE_SELECTOR=ext_intel_esimd_emulator:gpu  /__w/llvm/llvm/build-e2e/ESIMD/Output/BitonicSortK_emu.cpp.tmp.out
--
Exit Code: -9
Timeout: Reached timeout of 600 seconds

Command Output (stdout):
--
$ ":" "RUN: at line 9"
note: command had no output on stdout or stderr
$ "/__w/llvm/llvm/toolchain/bin//clang++" "-fsycl" "-fsycl-targets=spir64" "/__w/llvm/llvm/llvm/sycl/test-e2e/ESIMD/BitonicSortK_emu.cpp" "-o" "/__w/llvm/llvm/build-e2e/ESIMD/Output/BitonicSortK_emu.cpp.tmp.out"
note: command had no output on stdout or stderr
$ ":" "RUN: at line 10"
note: command had no output on stdout or stderr
$ "env" "CM_RT_PLATFORM=skl" "ONEAPI_DEVICE_SELECTOR=ext_intel_esimd_emulator:gpu" "/__w/llvm/llvm/build-e2e/ESIMD/Output/BitonicSortK_emu.cpp.tmp.out"
# command output:
BitonicSort (655[36](https://github.com/intel/llvm/actions/runs/5578936450/job/15176137323?pr=10432#step:17:37)) Start...

error: command failed with exit status: -9
error: command reached timeout: True