Synchronize sources of LASX to CMakeList.txt and back port simde's fi…

…x for loong64 platform

https://bugs.webkit.org/show_bug.cgi?id=280505
simd-everywhere/simde#1224

Reviewed by NOBODY (OOPS!).

Synchronize sources about LASX from BUILD.gn to CMakeList.txt
to fix error during linking on loong64 platform, like:

`ld.lld: error: undefined hidden symbol: SkOpts::Init_lasx()`

Fixed the compilation issue on the loong64 platform with clang:

` ../test/x86/avx512/../../../simde/simde-f16.h:100:11: error: _Float16 is not supported on this target.`

* Source/ThirdParty/skia/CMakeLists.txt:
Add:
src/core/SkBitmapProcState_opts_lasx.cpp
src/core/SkBlitRow_opts_lasx.cpp
src/core/SkSwizzler_opts_lasx.cpp
src/opts/SkOpts_lasx.cpp
* Source/WTF/wtf/simde/arm/neon.h:
use a portable version to avoid compilation errors in loongarch's float16

Source/ThirdParty/skia/CMakeLists.txt

@@ -182,13 +182,15 @@ add_library(Skia STATIC
     src/core/SkBitmapProcState_matrixProcs.cpp
     src/core/SkBitmapProcState_opts.cpp
     src/core/SkBitmapProcState_opts_ssse3.cpp
+    src/core/SkBitmapProcState_opts_lasx.cpp
     src/core/SkBlendMode.cpp
     src/core/SkBlendModeBlender.cpp
     src/core/SkBlitMask_opts.cpp
     src/core/SkBlitMask_opts_ssse3.cpp
     src/core/SkBlitRow_D32.cpp
     src/core/SkBlitRow_opts.cpp
     src/core/SkBlitRow_opts_hsw.cpp
+    src/core/SkBlitRow_opts_lasx.cpp
     src/core/SkBlitter.cpp
     src/core/SkBlitter_A8.cpp
     src/core/SkBlitter_ARGB32.cpp
@@ -344,6 +346,7 @@ add_library(Skia STATIC
     src/core/SkSwizzler_opts.cpp
     src/core/SkSwizzler_opts_hsw.cpp
     src/core/SkSwizzler_opts_ssse3.cpp
+    src/core/SkSwizzler_opts_lasx.cpp
     src/core/SkTaskGroup.cpp
     src/core/SkTextBlob.cpp
     src/core/SkTypeface.cpp
@@ -883,6 +886,7 @@ add_library(Skia STATIC
 
     src/opts/SkOpts_hsw.cpp
     src/opts/SkOpts_skx.cpp
+    src/opts/SkOpts_lasx.cpp
 
     src/ports/SkGlobalInitialization_default.cpp
     src/ports/SkImageGenerator_skia.cpp

Source/WTF/wtf/simde/arm/neon.h

@@ -8788,6 +8788,7 @@ SIMDE_BEGIN_DECLS_
     !(defined(HEDLEY_MSVC_VERSION) && defined(__clang__)) && \
     !(defined(SIMDE_ARCH_MIPS) && defined(__clang__)) && \
     !(defined(SIMDE_ARCH_ZARCH) && defined(__clang__)) && \
+    !(defined(SIMDE_ARCH_LOONGARCH) && defined(__clang__)) && \
     !(defined(__clang__) && defined(SIMDE_ARCH_RISCV64)) && ( \
       defined(SIMDE_X86_AVX512FP16_NATIVE) || \
       (defined(SIMDE_ARCH_X86_SSE2) && HEDLEY_GCC_VERSION_CHECK(12,0,0)) || \