e300,x300: Moved LED register space as not to overlap w/ GPIOs
e300,x300: Bumped FPGA compat number

- X300: FPGA compat 9
- E300: FPGA compat 5
3.8.1 Release

- Updated fpga-src submodule
- Updated version strings and images package
Merge branch 'maint'
Updated fpga-src submodule for master