Always use transfer_dst for buffers.

This will allow Adreno to use non-coherent buffers.

BUG=skia:5034
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2361473002

Review-Url: https://codereview.chromium.org/2361473002
diff --git a/src/gpu/vk/GrVkBuffer.cpp b/src/gpu/vk/GrVkBuffer.cpp
index 82674b4..5d2b565 100644
--- a/src/gpu/vk/GrVkBuffer.cpp
+++ b/src/gpu/vk/GrVkBuffer.cpp
@@ -45,9 +45,7 @@
             bufInfo.usage = VK_BUFFER_USAGE_TRANSFER_DST_BIT;
             break;
     }
-    if (!desc.fDynamic) {
-        bufInfo.usage |= VK_BUFFER_USAGE_TRANSFER_DST_BIT;
-    }
+    bufInfo.usage |= VK_BUFFER_USAGE_TRANSFER_DST_BIT;
 
     bufInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
     bufInfo.queueFamilyIndexCount = 0;