[PATCH] PRU: Fix HW register numbering for DWARF2 output

[Nick Clifton]

Hi Dimitar,

> 2018-07-27  Dimitar Dimitrov  <dimitar@dinux.eu>
> 
> 	* config/tc-pru.c (pru_regname_to_dw2regnum): Return the starting HW
> 	byte-register number.
> 	(pru_frame_initial_instructions): Use byte-numbering for FP index.
> 	* config/tc-pru.h (DWARF2_DEFAULT_RETURN_COLUMN): Use number from
> 	latest GCC.
> 	(DWARF2_CIE_DATA_ALIGNMENT): Set to -1.

Approved - please apply.

Cheers
  Nick