pcmcia: remove CS_ error codes alltogether

Remoe the CS_ error codes. Drivers are expected to use default
error definitions (errno.h etc.).

Only one CS_ error code -- CS_IN_USE -- is used internally by the
(deprecated) pcmcia-cs userspace package. Therefore, keep this one
around so that it still compiles.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
diff --git a/include/pcmcia/ds.h b/include/pcmcia/ds.h
index a06bbec..9ff9de9 100644
--- a/include/pcmcia/ds.h
+++ b/include/pcmcia/ds.h
@@ -138,6 +138,9 @@
 #define DS_UNBIND_REQUEST		_IOW ('d', 63, bind_info_t)
 #define DS_BIND_MTD			_IOWR('d', 64, mtd_info_t)
 
+/* used in userspace only */
+#define CS_IN_USE			0x1e
+
 #ifdef __KERNEL__
 #include <linux/device.h>
 #include <pcmcia/ss.h>