procd: fix issue mounting overlay fs

The previous procd update broke mounting overlayfs in an attempt to
fix an off-by-one error. Revert that broken fix and apply fix from
Nick Hainke <[email protected]> instead to bring things back to
life.

 20adf53 Revert "initd: fix off-by-one error in mkdev.c"
 773e8da initd: fix off-by-one error in mkdev.c

Signed-off-by: Daniel Golle <[email protected]>

package/system/procd/Makefile

@@ -13,8 +13,8 @@ PKG_RELEASE:=$(AUTORELEASE)
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/procd.git
 PKG_SOURCE_DATE:=2021-08-31
-PKG_SOURCE_VERSION:=269c9e4c7e5b6a726712abf939255980f03266c5
-PKG_MIRROR_HASH:=7784c2853c74209e3aeb8e7328dd0024208cc5441afe6a5419c08ba1aee31f62
+PKG_SOURCE_VERSION:=773e8da41532b23888511cd864fbd251ecadc577
+PKG_MIRROR_HASH:=2b7c91427861f23fcd444fc05c033ed0f348ff353097a98d583f38a79ce294dd
 CMAKE_INSTALL:=1
 
 PKG_LICENSE:=GPL-2.0