avr32: use set_current_blocked() in handle_signal/sys_rt_sigreturn
avr32: use set_current_blocked() in handle_signal/sys_rt_sigreturn

It is wrong to change ->blocked directly, see e6fa16ab.  Change
handle_signal() and sys_rt_sigreturn() to use the right helper,
set_current_blocked().

Cc: Hans-Christian Egtvedt <11ce19a6fc3bb47abce595a29a6ea4cfed5efa4c@samfundet.no>
Acked-by: Havard Skinnemoen <de7418319212d7eab32260a76732c1f83e514852@gmail.com>
Reviewed-by: Matt Fleming <b02f0790d66a0f0a6b369873bf6df37420fbe5dd@intel.com>
Signed-off-by: Oleg Nesterov <20b70f0af00562e63758b9ee42012ecc96c58590@redhat.com>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Al Viro <de609eb4d5d70b1d38ec6642adbfc33a2781f63c@zeniv.linux.org.uk>

TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs