gralloc: Add support for Y16 and Y8 color formats

Add support for buffer allocation with y16 and Y8
color formats.

Change-Id: If167e32c82fa1c89f205b191e8a118acff923c0b
CRs-Fixed: 2048886
diff --git a/libgralloc1/gr_utils.cpp b/libgralloc1/gr_utils.cpp
index 444de8c..d5ec426 100644
--- a/libgralloc1/gr_utils.cpp
+++ b/libgralloc1/gr_utils.cpp
@@ -199,6 +199,7 @@
   // Below switch should be for only YUV/custom formats
   switch (format) {
     case HAL_PIXEL_FORMAT_RAW16:
+    case HAL_PIXEL_FORMAT_Y16:
       size = alignedw * alignedh * 2;
       break;
     case HAL_PIXEL_FORMAT_RAW10:
@@ -206,6 +207,7 @@
       size = ALIGN(alignedw * alignedh, SIZE_4K);
       break;
     case HAL_PIXEL_FORMAT_RAW8:
+    case HAL_PIXEL_FORMAT_Y8:
       size = alignedw * alignedh * 1;
       break;
 
@@ -386,8 +388,10 @@
     case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
     case HAL_PIXEL_FORMAT_NV21_ZSL:
     case HAL_PIXEL_FORMAT_RAW16:
+    case HAL_PIXEL_FORMAT_Y16:
     case HAL_PIXEL_FORMAT_RAW10:
     case HAL_PIXEL_FORMAT_RAW8:
+    case HAL_PIXEL_FORMAT_Y8:
       GetYuvSPPlaneInfo(hnd->base, width, height, 1, ycbcr);
       std::swap(ycbcr->cb, ycbcr->cr);
       break;
@@ -657,6 +661,8 @@
       aligned_w = ALIGN(width, alignment);
       break;
     case HAL_PIXEL_FORMAT_RAW16:
+    case HAL_PIXEL_FORMAT_Y16:
+    case HAL_PIXEL_FORMAT_Y8:
       aligned_w = ALIGN(width, 16);
       break;
     case HAL_PIXEL_FORMAT_RAW12: