Add 2 addtional VkFormat's to vkGetPhysicalDeviceSurfaceFormatsKHR

The Android Vulkan loader initially supported only 3 VkFormat's for
swapchain creation, with a TODO comment to add more.  In order for
ANGLE to match native GLES drivers, the Android Vulkan loader needs to
support the following formats:

- VK_FORMAT_A2B10G10R10_UNORM_PACK32
- VK_FORMAT_R16G16B16A16_SFLOAT

Bug: b/124942437
Test: GLES dEQP on top of ANGLE on top of Vulkan
Change-Id: If893f4cc81c94242e6d66e0109572f9892323ea4