frr: fix running on mips (again)

add mips fix missed on version upgrade

Signed-off-by: Lucian Cristian <lucian.cristian@gmail.com>

net/frr/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 PKG_NAME:=frr
 PKG_VERSION:=7.4
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE_URL:=https://github.com/FRRouting/frr/archive/
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz

net/frr/patches/098-fix_mips_libyang.patch

+--- a/lib/northbound.h
++++ b/lib/northbound.h
+@@ -504,11 +504,7 @@ struct frr_yang_module_info {
+ 
+ 		/* Priority - lower priorities are processed first. */
+ 		uint32_t priority;
+-#if defined(__GNUC__) && ((__GNUC__ - 0) < 5) && !defined(__clang__)
+ 	} nodes[YANG_MODULE_MAX_NODES + 1];
+-#else
+-	} nodes[];
+-#endif
+ };
+ 
+ /* Northbound error codes. */