Prevents upstream build to disable debug symbols or set its own optimization
level

Index: xilinx-vcu-ctrl/Makefile
===================================================================
--- xilinx-vcu-ctrl.orig/Makefile
+++ xilinx-vcu-ctrl/Makefile
@@ -1,5 +1,5 @@
-CFLAGS+=-O3
-CFLAGS+=-g0
+#CFLAGS+=-O3
+#CFLAGS+=-g0

 SCM_REV:=-D'SCM_REV="$(shell git rev-parse HEAD 2> /dev/null || echo 0)"'
 SCM_BRANCH=-D'SCM_BRANCH="$(shell git rev-parse --abbrev-ref HEAD 2> /dev/null || echo unknown)"'
