fwtool: update to latest Git head

 8f7fe925ca20 cmake: use extra compiler warnings only on gcc6+

Signed-off-by: Petr Štetiar <[email protected]>

package/system/fwtool/Makefile

@@ -12,9 +12,9 @@ PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=$(PROJECT_GIT)/project/fwtool.git
-PKG_SOURCE_DATE:=2019-11-09
-PKG_SOURCE_VERSION:=9d9d4c2847862adec2f474d4126213c17f98e024
-PKG_MIRROR_HASH:=4a72a48cbc7cda4c1860ec8328c049b4b84f7f00273d82ee98175937b63af1f8
+PKG_SOURCE_DATE:=2019-11-12
+PKG_SOURCE_VERSION:=8f7fe925ca205c8e8e2d0d1b16218c1e148d5173
+PKG_MIRROR_HASH:=ff68e77397a7ba8f497aae9a6d1f89e196c89391a8d5ed0b81c4eafb889ba744
 CMAKE_INSTALL:=1
 
 PKG_FLAGS:=nonshared