Implement CYGPKG_HAL_ARM_ARM7

[Martin Laabs]

Hi,

referencing to 
http://www.nabble.com/at91sam9263ek-support-ver.-beta-1-td21479723.html
I'd like to ask how much work it would be to implement an ARM ARM7 (like 
the ARM ARM9) architecture (or maybe a first stub of that) and change 
the current ARM7 targets to use this instead of the more common ARM 
architecture.
Is it just changing the records in the ecos.db, all the cdl scripts of 
the ARM7 tagets and moving some files? (Yes - I have some free time this 
weekend.)

Greetings,
  Martin Laabs