Fix sparc-solaris build failure (sparc-sol2-nat.c)

Fix sparc-solaris build failure (sparc-sol2-nat.c)

Hello,

The recent patch for %fsr handling had a couple of tiny mistakes
that cause the build to fail on sparc-solaris.  Fixed thusly.

gdb/ChangeLog:

        * sparc-sol2-nat.c (supply_gregset): Fix first parameter in
        call to sparc_supply_fpregset.
        (fill_fpregset): Fix first parameter in call to
        sparc_collect_fpregset.

Tested on sparc-solaris by rebuilding GDB.  Will check it in.

Thanks,
--
Joel