[PATCH, picochip] various minor fixes

[Hariharan]

Hello all,
I have fixed a couple of warnings in the port code and fixed a bug in 
location information. Committed to mainline as r158174.

Thanks
Hari

ChangeLog:


        * config/picochip/picochip.c (picochip_rtx_costs): Use correct 
function
        template.
        (picochip_override_options): Enable section anchors only above O1.
        (picochip_reorg): Fixed a couple of build warnings.