- remove OPT_MCU_SAME51 in favor of OPT_MCU_SAME5X and working around
differences in the Atmel bsp locally in the D5035-01 bsp.
- rename board folder to d5035_01 for consistency with other boards
This adds source files that allow to run TinyUSB stack on DA1469x-dk-pro board.
Source files .c .S and .ld are taken from Apache Mynewt repository.
Those files were stripped to allow starting board without Mynewt os.