nvk: fix maxPushDescriptors
The maxPushDescriptors property was being set in GetPhysicalDeviceMemoryProperties2, but should be in GetPhysicalDeviceProperties2.
vulkaninfo before:
VkPhysicalDevicePushDescriptorPropertiesKHR:
--------------------------------------------
maxPushDescriptors = 0
vulkaninfo after:
VkPhysicalDevicePushDescriptorPropertiesKHR:
--------------------------------------------
maxPushDescriptors = 32
Initially spotted with Sascha Willems pushdescriptors example
Edited by Thomas Andersen