Changed section naming to PRU 2.0.0 compiler format

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Changed R3.w0 to R3.w2 for return address storage

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Update linker script for PRU 2.0.0B1 compiler

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Updated pru_defs.h for PRU 2.0.0 compiler

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
PRU 2.0.0 compiled binaries

Signed-off-by: Matt Ranostay <mranostay@gmail.com>