iiod: Use <iio/iio-backend.h> instead of duplicating code

It provides zalloc() and the enum iio_attr_type.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>

iiod/ops.h

@@ -15,6 +15,7 @@
 #include <endian.h>
 #include <errno.h>
 #include <iio/iio.h>
+#include <iio/iio-backend.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
@@ -55,12 +56,6 @@ struct DevEntry;
 extern struct iio_mutex *buflist_lock;
 extern struct iio_mutex *evlist_lock;
 
-enum iio_attr_type {
-	IIO_ATTR_TYPE_DEVICE,
-	IIO_ATTR_TYPE_DEBUG,
-	IIO_ATTR_TYPE_BUFFER,
-};
-
 struct block_entry {
 	SLIST_ENTRY(block_entry) entry;
 	struct iio_block *block;
@@ -129,11 +124,6 @@ struct iio_device_pdata {
 
 extern bool server_demux; /* Defined in iiod.c */
 
-static inline void *zalloc(size_t size)
-{
-	return calloc(1, size);
-}
-
 void interpreter(struct iio_context *ctx, int fd_in, int fd_out,
 		 bool is_socket, bool is_usb, struct thread_pool *pool,
 		 const void *xml_zstd, size_t xml_zstd_len);