[media] b2c2: export b2c2_flexcop_debug symbol

ERROR: "b2c2_flexcop_debug" [drivers/media/pci/b2c2/b2c2-flexcop-pci.ko] undefined!
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/common/b2c2/flexcop.c

@@ -43,6 +43,7 @@
 #endif
 
 int b2c2_flexcop_debug;
+EXPORT_SYMBOL_GPL(b2c2_flexcop_debug);
 module_param_named(debug, b2c2_flexcop_debug,  int, 0644);
 MODULE_PARM_DESC(debug,
 		"set debug level (1=info,2=tuner,4=i2c,8=ts,"