Added ARM-Neon support for SIMD.SkipWhitespace*

Change-Id: Iaf210d029758723a7eeb7f28fc10cab7467889a9
Signed-off-by: Jun He <jun.he@arm.com>
diff --git a/test/unittest/simdtest.cpp b/test/unittest/simdtest.cpp
index b01b559..7b58cd0 100644
--- a/test/unittest/simdtest.cpp
+++ b/test/unittest/simdtest.cpp
@@ -21,6 +21,8 @@
 #  define RAPIDJSON_SSE42
 #elif defined(__SSE2__)
 #  define RAPIDJSON_SSE2
+#elif defined(__ARM_NEON)
+#  define RAPIDJSON_NEON
 #endif
 
 #define RAPIDJSON_NAMESPACE rapidjson_simd
@@ -41,6 +43,8 @@
 #define SIMD_SUFFIX(name) name##_SSE2
 #elif defined(RAPIDJSON_SSE42)
 #define SIMD_SUFFIX(name) name##_SSE42
+#elif defined(RAPIDJSON_NEON)
+#define SIMD_SUFFIX(name) name##_NEON
 #else
 #define SIMD_SUFFIX(name) name
 #endif