lossless_neon: harmonize function suffixes

BUG=webp:355

Change-Id: I4210081a39800b5c2589c443da237269908af666
diff --git a/src/dsp/lossless_neon.c b/src/dsp/lossless_neon.c
index 5feea78..76a1b6f 100644
--- a/src/dsp/lossless_neon.c
+++ b/src/dsp/lossless_neon.c
@@ -505,8 +505,8 @@
   1, 255, 1, 255, 5, 255, 5, 255, 9, 255, 9, 255, 13, 255, 13, 255
 };
 
-static WEBP_INLINE uint8x16_t DoGreenShuffle(const uint8x16_t argb,
-                                             const uint8x16_t shuffle) {
+static WEBP_INLINE uint8x16_t DoGreenShuffle_NEON(const uint8x16_t argb,
+                                                  const uint8x16_t shuffle) {
   return vcombine_u8(vtbl1q_u8(argb, vget_low_u8(shuffle)),
                      vtbl1q_u8(argb, vget_high_u8(shuffle)));
 }
@@ -514,8 +514,8 @@
 // 255 = byte will be zeroed
 static const uint8_t kGreenShuffle[8] = { 1, 255, 1, 255, 5, 255, 5, 255  };
 
-static WEBP_INLINE uint8x16_t DoGreenShuffle(const uint8x16_t argb,
-                                             const uint8x8_t shuffle) {
+static WEBP_INLINE uint8x16_t DoGreenShuffle_NEON(const uint8x16_t argb,
+                                                  const uint8x8_t shuffle) {
   return vcombine_u8(vtbl1_u8(vget_low_u8(argb), shuffle),
                      vtbl1_u8(vget_high_u8(argb), shuffle));
 }
@@ -531,7 +531,7 @@
 #endif
   for (; src < end; src += 4, dst += 4) {
     const uint8x16_t argb = vld1q_u8((const uint8_t*)src);
-    const uint8x16_t greens = DoGreenShuffle(argb, shuffle);
+    const uint8x16_t greens = DoGreenShuffle_NEON(argb, shuffle);
     vst1q_u8((uint8_t*)dst, vaddq_u8(argb, greens));
   }
   // fallthrough and finish off with plain-C
@@ -574,7 +574,7 @@
     const uint8x16_t in = vld1q_u8((const uint8_t*)(src + i));
     const uint32x4_t a0g0 = vandq_u32(vreinterpretq_u32_u8(in), mask_ag);
     // 0 g 0 g
-    const uint8x16_t greens = DoGreenShuffle(in, shuffle);
+    const uint8x16_t greens = DoGreenShuffle_NEON(in, shuffle);
     // x dr  x db1
     const int16x8_t A = vqdmulhq_s16(vreinterpretq_s16_u8(greens), mults_rb);
     // x r'  x   b'