add release variable for glibc git

toolchain/glibc/Makefile.inc

@@ -5,6 +5,7 @@ PKG_NAME:=		glibc
 ifeq ($(ADK_LIBC_VERSION),git)
 PKG_VERSION:=		2.22.90
 PKG_SITES:=		git://sourceware.org/git/glibc.git
+PKG_RELEASE:=		1
 endif
 ifeq ($(ADK_TARGET_LIB_GLIBC_2_22),y)
 PKG_VERSION:=		2.22