konami/k001005.cpp, konami/k001006.cpp: Cleaned up code: (#13313)

* Suppress side effects for debugger reads.
* Use bit helpers, made some variables constant.
* konami/k001006.cpp: Derive from device_palette_interface for palette.
* konami/k001006.cpp: Throw a fatal error if the texture ROM size is not a supported size.
* konami/k001006.cpp: Match texture data size to texture ROM size.

Author: cam900