Patch for Bug in GDB Simulator for h8300h targets

[Michael Snyder]

Anil Paranjape wrote:
> Hi Michael,
> 
> The maximum memory that can be addressed by H8300H series controllers( H8/3048,H8/3069 etc.)
> is 16 Mbytes i.e. from 0x000000 to 0xFFFFFF. So when H8300H target is selected in simulator, it should be able to address 16 Mbytes of memory(24 bit addressing) but simulator allocates only 
> 256 Kbytes of memory(18 bit addressing). 
> 
> Please refer to section 1.3 of H8300H series programming manual,
> http://www.eu.renesas.com/documents/mpumcu/pdf/h8300h_p.pdf

Anil, thank you for the clarification.  There doesn't appear to be
a maintainer for the H8 simulator, so I'll put on my global maintainer
hat and say "check it in, please".