d/scripts/abi-generate: add new helper script

and use it in d/rules to generate the checked ABI file.

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>

debian/rules

@@ -205,7 +205,7 @@ fwcheck: fwlist-${KVNAME} fwlist-previous
 
 
 abi-${KVNAME}: .compile_mark
-	sed -e 's/^\(.\+\)[[:space:]]\+\(.\+\)[[:space:]]\(.\+\)$$/\3 \2 \1/' debian/${PVE_HEADER_PKG}/usr/src/linux-headers-${KVNAME}/Module.symvers | sort > abi-${KVNAME}
+	debian/scripts/abi-generate debian/${PVE_HEADER_PKG}/usr/src/linux-headers-${KVNAME}/Module.symvers abi-${KVNAME} ${KVNAME}
 
 .PHONY: abicheck
 abicheck: debian/scripts/abi-check abi-${KVNAME} abi-previous abi-blacklist