[openwrt/openwrt] ramips: sercomm-payload: use pide-file argument

[LEDE Commits]

noltari pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/8758438c27a88694a1389a42f82b8262d6a92f97

commit 8758438c27a88694a1389a42f82b8262d6a92f97
Author: Álvaro Fernández Rojas <noltari at gmail.com>
AuthorDate: Sun Apr 9 09:59:21 2023 +0200

    ramips: sercomm-payload: use pide-file argument
    
    Instead of passing an array of hex bytes for the Sercomm PID we can now use
    the --pid-file parameter.
    
    Signed-off-by: Álvaro Fernández Rojas <noltari at gmail.com>
---
 target/linux/ramips/image/common-sercomm.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/target/linux/ramips/image/common-sercomm.mk b/target/linux/ramips/image/common-sercomm.mk
index 1cd6d1ece7..83bb2a742c 100644
--- a/target/linux/ramips/image/common-sercomm.mk
+++ b/target/linux/ramips/image/common-sercomm.mk
@@ -51,7 +51,7 @@ define Build/sercomm-payload
 	$(TOPDIR)/scripts/sercomm-payload.py \
 		--input-file $@ \
 		--output-file $@.tmp \
-		--pid "$$(cat $@.pid | od -t x1 -An -v | tr -d '\n')"
+		--pid-file $@.pid
 	mv $@.tmp $@
 	rm $@.pid
 endef