signal: Remove the task parameter from force_sig_fault

As synchronous exceptions really only make sense against the current
task (otherwise how are you synchronous) remove the task parameter
from from force_sig_fault to make it explicit that is what is going
on.

The two known exceptions that deliver a synchronous exception to a
stopped ptraced task have already been changed to
force_sig_fault_to_task.

The callers have been changed with the following emacs regular expression
(with obvious variations on the architectures that take more arguments)
to avoid typos:

force_sig_fault[(]\([^,]+\)[,]\([^,]+\)[,]\([^,]+\)[,]\W+current[)]
->
force_sig_fault(\1,\2,\3)

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

arch/sh/math-emu/math.c

@@ -560,7 +560,7 @@ static int ieee_fpe_handler(struct pt_regs *regs)
 			task_thread_info(tsk)->status |= TS_USEDFPU;
 		} else {
 			force_sig_fault(SIGFPE, FPE_FLTINV,
-					(void __user *)regs->pc, current);
+					(void __user *)regs->pc);
 		}
 
 		regs->pc = nextpc;