boot/boot-wrapper-aarch64: add hash file

Since boot-wrapper-aarch64 introduction in commit [1]
"boot-wrapper-aarch64: new package", the package never received a hash
file. This commit adds it, including the source archive and license
hashes.

[1] https://gitlab.com/buildroot.org/buildroot/-/commit/7689b72e00fd4d8c017880004e83a1c79144ab7b

Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

boot/boot-wrapper-aarch64/boot-wrapper-aarch64.hash

@@ -0,0 +1,5 @@
+# Locally computed:
+sha256  faa2843eaa3bc219da5ba9f69c02b45081a7634038faef5cba216d5e927ca2be  boot-wrapper-aarch64-ac6742520ded1da30d500f74e8affe86e27cabd5-git4.tar.gz
+
+# Hash for license files:
+sha256  bdaa479b497358151fc1166dc75a613e68321320b945e92ea07a4b6dc9a63271  LICENSE.txt