Add support for ARM build

Author: Qubad786

arch/arm64/kernel/Makefile.syscalls

@@ -3,4 +3,4 @@
 syscall_abis_32 +=
 syscall_abis_64 += renameat rlimit memfd_secret
 
-syscalltbl = arch/arm64/tools/syscall_%.tbl
+syscalltbl = $(srctree)/arch/arm64/tools/syscall_%.tbl

scripts/package/mkdebian

@@ -173,15 +173,15 @@ else
 fi
 sourcename=${KDEB_SOURCENAME:-linux-$KERNELRELEASE}
 
+debarch=
+set_debarch
+
 if [ "$ARCH" = "um" ] ; then
 	packagename=user-mode-linux
 else
-	packagename=linux-image-truenas-$exversion-amd64
+	packagename=linux-image-truenas-$exversion-$debarch
 fi
 
-debarch=
-set_debarch
-
 # Try to determine distribution
 if [ "${KDEB_CHANGELOG_DIST:+set}" ]; then
         distribution=$KDEB_CHANGELOG_DIST