aarch64: fix rt_sigreturn decoding
aarch64: fix rt_sigreturn decoding

* sigreturn.c (sys_sigreturn) [AARCH64]: Fix personality check.

cuviper/strace,AOSP-YU/platform_external_strace,cuviper/strace,TeamExodus/external_strace,Saruta/strace,vrastogi/strace,MonkeyZZZZ/platform_external_strace,vrastogi/strace,YUPlayGodDev/platform_external_strace,vrastogi/strace,kapdop/android_external_strace,vrastogi/strace,Infinitive-OS/platform_external_strace,geekboxzone/mmallow_external_strace,YUPlayGodDev/platform_external_strace,MonkeyZZZZ/platform_external_strace,Saruta/strace,kapdop/android_external_strace,cuviper/strace,Yu-AndroidM/android_external_strace,Yu-AndroidM/android_external_strace,Yu-AndroidM/android_external_strace,Yu-AndroidM/android_external_strace,cuviper/strace,TeamExodus/external_strace,AOSP-YU/platform_external_strace,TeamExodus/external_strace,geekboxzone/mmallow_external_strace,AOSP-YU/platform_external_strace,TeamExodus/external_strace,bigzz/strace_android,YUPlayGodDev/platform_external_strace,geofft/strace,Infinitive-OS/platform_external_strace,Distrotech/strace,MonkeyZZZZ/platform_external_strace,MonkeyZZZZ/platform_external_strace,cuviper/strace,kapdop/android_external_strace,geofft/strace,Distrotech/strace,Yu-AndroidM/android_external_strace,geofft/strace,Saruta/strace,Distrotech/strace,AOSP-YU/platform_external_strace,Saruta/strace,YUPlayGodDev/platform_external_strace,bigzz/strace_android,Distrotech/strace,bigzz/strace_android,bigzz/strace_android,geekboxzone/mmallow_external_strace,Infinitive-OS/platform_external_strace,TeamExodus/external_strace,Saruta/strace,vrastogi/strace,geofft/strace,Infinitive-OS/platform_external_strace,Distrotech/strace,geekboxzone/mmallow_external_strace,geekboxzone/mmallow_external_strace,MonkeyZZZZ/platform_external_strace,bigzz/strace_android,kapdop/android_external_strace,geofft/strace,AOSP-YU/platform_external_strace,YUPlayGodDev/platform_external_strace,Infinitive-OS/platform_external_strace,kapdop/android_external_strace