[testsuite][committed] Move gcc.dg/attr-isr.c to gcc.target/sh/attr-isr.c

[Oleg Endo]

Hi,

The gcc.dg/attr-isr.c test case is pretty much SH specific.  Thus, moved
to gcc.target/sh via svn mv, hence no patch.  Committed as r216425.

Cheers,
Oleg

gcc/testsuite/ChangeLog:
        * gcc.dg/attr-isr.c: Move SH specific test to ...
        * gcc.target/sh/attr-isr.c: ... here.