csc: fix custom ARGB_8888 pixel format's name

Change-Id: Ie5931a15bcfcfc9c2bdcad416987459d8f85fc2b
Signed-off-by: Greg Hackmann <ghackmann@google.com>
diff --git a/include/exynos_format.h b/include/exynos_format.h
index f4c0466..610c89d 100644
--- a/include/exynos_format.h
+++ b/include/exynos_format.h
@@ -30,7 +30,7 @@
     HAL_PIXEL_FORMAT_YCbCr_420_SP               = 0x105,
     HAL_PIXEL_FORMAT_YCrCb_422_SP               = 0x106,
     HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED         = 0x107,
-    HAL_PIXEL_FORMAT_ARGB888                    = 0x108,
+    HAL_PIXEL_FORMAT_CUSTOM_ARGB_8888           = 0x108,
     // support custom format for zero copy
     HAL_PIXEL_FORMAT_CUSTOM_YCbCr_420_SP        = 0x110,
     HAL_PIXEL_FORMAT_CUSTOM_YCrCb_420_SP        = 0x111,