Please pickup Valgrind patch for bug 381556

I'm performing Valgrind testing on an ElPotato running Ubuntu Bionic image from Armbian. My program is dying like in https://bugs.kde.org/show_bug.cgi?id=381556 :

```

valgrind --track-origins=yes --suppressions=cryptopp.supp ./cryptest.exe v
==12969== Memcheck, a memory error detector
==12969== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==12969== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info
==12969== Command: ./cryptest.exe v
==12969==
ARM64 front end: branch_etc
disInstr(arm64): unhandled instruction 0xD5380000
disInstr(arm64): 1101'0101 0011'1000 0000'0000 0000'0000
==12969== valgrind: Unrecognised instruction at address 0x4014c90.
==12969==    at 0x4014C90: init_cpu_features (cpu-features.c:72)
==12969==    by 0x4014C90: dl_platform_init (dl-machine.h:208)
==12969==    by 0x4014C90: _dl_sysdep_start (dl-sysdep.c:231)
==12969==    by 0x40018C3: _dl_start_final (rtld.c:414)
==12969==    by 0x4001B47: _dl_start (rtld.c:523)
==12969==    by 0x40011C7: ??? (in /lib/aarch64-linux-gnu/ld-2.27.so)

```

Here is a similar Red Hat report: https://bugzilla.redhat.com/show_bug.cgi?id=1467952

Upstream Ubuntu bug report: https://bugs.launchpad.net/ubuntu/+source/valgrind/+bug/1826811

Please pickup the patch in the 381556 bug report.