package/botan: fix build with aarch64_be

aarch64_be support was added by commit 3e3b524883cebf190099c72d41c817baa8192589

Fixes:
 - http://autobuild.buildroot.org/results/69ebf03c59b2af4140a39bc26f17d0396b6ec15d

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
1 file changed