[nrf noup] net: socket: fix SO_DFU_RESOURCES definition

Change from SO_DFU_RESOURCE to SO_DFU_RESOURCES.

Signed-off-by: Emanuele Di Santo <[email protected]>
(cherry picked from commit d6e6755)
Signed-off-by: Martí Bolívar <[email protected]>

Author: lemrey

include/net/socket.h

@@ -802,7 +802,7 @@ struct ifreq {
 
 /* Socket options for SOL_DFU level */
 #define SO_DFU_FW_VERSION 1
-#define SO_DFU_RESOURCE 2
+#define SO_DFU_RESOURCES 2
 #define SO_DFU_TIMEO 3
 #define SO_DFU_APPLY 4
 #define SO_DFU_REVERT 5