nativesdk-packagegroup-sdk-host: add perl integer module

Kernel commit 12dd461ebd19 ("crypto: arm64 - generate *.S by Perl at
build time instead of shipping them") uses perl to generate assembler
files for crypto functionality, which relies on the integer.pm module to
be provided.

Add perl module to package group and export it in SDK.

Signed-off-by: Andrey Zhizhikin <andrey.z@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>