Fix undeclared symbol warnings from sparse

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5539 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/hw/tsc210x.c b/hw/tsc210x.c
index 61e101d..0ae48f7 100644
--- a/hw/tsc210x.c
+++ b/hw/tsc210x.c
@@ -26,6 +26,7 @@
 #include "qemu-timer.h"
 #include "console.h"
 #include "omap.h"	/* For struct i2s_codec_s and struct uwire_slave_s */
+#include "devices.h"
 
 #define TSC_DATA_REGISTERS_PAGE		0x0
 #define TSC_CONTROL_REGISTERS_PAGE	0x1