target/xtensa: dump correct physical registers

target/xtensa: dump correct physical registers

xtensa_cpu_dump_state outputs CPU physical registers as is, without
synchronization from current window. That may result in different values
printed for the current window and corresponding physical registers.
Synchronize physical registers from window before dumping.

Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
(cherry picked from commit b55b1afda942306e4e40420aced1524bd83ba16d)
 Conflicts:
	target/xtensa/translate.c
* drop context dependencies
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>