GitHub #388 Add matching quant checks in TfLite parser
GitHub #388 Add matching quant checks in TfLite parser

* Adds checks for matching tensor quantization info
  as per TfLite documentation.
* Adds missing layer nullptr assert checks.

Signed-off-by: James Conroy <ce41d179dd5a8468f6c1c79fd3299ea93291d455@arm.com>
Change-Id: I4344a3554e349ce8edcd14126f63bc627637e0cd

ARM-software/armnn,ARM-software/armnn,ARM-software/armnn