Clamp Vulkan caps to INT_MAX

AMD sets some Vulkan caps values to 0xffffffff as a uint32_t, which
overflows our int values and causes merry havok.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2371923002

Review-Url: https://codereview.chromium.org/2371923002
2 files changed