Camera: Fix condition check for min/max zoom ratios

- minZoomRatio can be larger than 1.0f
- assert both min and max zoom ratios to be greater than 0.
- assert min zoom ratio to be equal or smaller than max zoom ratio.

Test: CTS on Cuttlefish camera
Bug: 153377715
Change-Id: Ia5d3f2ec7a51d4a35f199abe15a90c72cb7f3456