media/staging: fix allyesconfig build error

Fix x86 allyesconfig builds. Builds fail due to a non-static variable
named 'debug' in drivers/staging/media/as102:

arch/x86/built-in.o:arch/x86/kernel/entry_32.S:1296: first defined here
ld: Warning: size of symbol `debug' changed from 90 in arch/x86/built-in.o to 4 in drivers/built-in.o

Thou shalt have no non-static identifiers that are named 'debug'.

Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Pierrick Hascoet <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/staging/media/as102/as102_drv.c

···
 #include "as102_fw.h"
 #include "dvbdev.h"
 
-int debug;
-module_param_named(debug, debug, int, 0644);
+int as102_debug;
+module_param_named(debug, as102_debug, int, 0644);
 MODULE_PARM_DESC(debug, "Turn on/off debugging (default: off)");
 
 int dual_tuner;

drivers/staging/media/as102/as102_drv.h

···
 #define DRIVER_FULL_NAME "Abilis Systems as10x usb driver"
 #define DRIVER_NAME "as10x_usb"
 
-extern int debug;
+extern int as102_debug;
+#define debug	as102_debug
 
 #define dprintk(debug, args...) \
 	do { if (debug) {	\