ARC: Change calling convention of do_page_fault()

switch the args (address, pt_regs) to match with all the other "C"
exception handlers.

This removes the awkwardness in EV_ProtV for page fault vs. unaligned
access.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>

diff --cc arch/arc/kernel/entry.S
Simple merge

diff --cc arch/arc/mm/fault.c
Simple merge

diff --cc arch/arc/mm/tlbex.S
Simple merge