you’d mos tlikely need to croscompile the driver using the toolchain that comes with Digi Embedded Linux:
example of such crosscompiling using DEL 5.7:
mkdir src
cd src
wget ftp://ftp.debian.org/debian/pool/main/s/ssmtp/ssmtp_2.64.orig.tar.bz2
tar jxvf ssmtp_2.64.orig.tar.bz2
cd ssmtp-2.64/
export TOOLCHAIN_DIR=/usr/local/DigiEL-5.7/x-tools/arm-unknown-linux-uclibcgnueabi/
export PATH=/usr/local/DigiEL-5.7/x-tools/arm-unknown-linux-uclibcgnueabi/bin:$PATH
CC=arm-linux-gcc ./configure --host=arm-linux --target=arm-linux --prefix=/usr/local/DigiEL-5.9/x-tools/arm-unknown-linux-gnueabi
make
Digi you check the Linux kernel in DEL-5.7.2 if there is a driver for Atheros AR7010 available? Did you enable this driver in the kernel and recompiled it with the Digi toolchain?
Maybe you can backport the driver into the Digi Linux from the source code where you compiled the module for raspberry?