opkg: update to git HEAD of 2022-01-09

 db7fb64 libopkg: pkg_hash: prefer to-be-installed packages
 2edcfad libopkg: set 'const' attribute for argv

This should fix the ImageBuilder problems people are having since we
introduced the 'uci-firewall' providers.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

package/system/opkg/Makefile

@@ -12,9 +12,9 @@ PKG_FLAGS:=essential
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/opkg-lede.git
-PKG_SOURCE_DATE:=2021-06-13
-PKG_SOURCE_VERSION:=1bf042dd06751b693a8544d2317e5b969d666b69
-PKG_MIRROR_HASH:=aeda4e0f11805bf95fc7be6d38391ce579acd965c8ba6a490b3e8669815b7264
+PKG_SOURCE_DATE:=2022-01-09
+PKG_SOURCE_VERSION:=2edcfad1bb9a32f31199d5842aa087b4d30ec6f5
+PKG_MIRROR_HASH:=b21e51ffe5bae3ca01865415630cc1f4b471f69e0d7947264a579165c7d44294
 
 PKG_LICENSE:=GPL-2.0
 PKG_LICENSE_FILES:=COPYING