package/ifplugd: add patch to fix musl build error

The musl C library does not define type names such as `__uint32_t`. Instead we
use the integer types declared in the ISO C standard header file <stdint.h>.

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/ifplugd/0004-musl-fix-types.patch

@@ -0,0 +1,24 @@
+The musl C library does not define type names such as `__uint32_t`. Instead we
+use the integer types declared in the ISO C standard header file <stdint.h>.
+
+Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
+
+diff -purN ifplugd-0.28.orig/src/ethtool-local.h ifplugd-0.28/src/ethtool-local.h
+--- ifplugd-0.28.orig/src/ethtool-local.h	2015-08-01 18:43:47.360916834 +0200
++++ ifplugd-0.28/src/ethtool-local.h	2015-08-01 18:44:24.256037746 +0200
+@@ -21,10 +21,12 @@
+  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+  */
+ 
++#include <stdint.h>
++
+ typedef unsigned long long u64;
+-typedef __uint32_t u32;        
+-typedef __uint16_t u16;        
+-typedef __uint8_t u8;          
++typedef uint32_t u32;
++typedef uint16_t u16;
++typedef uint8_t u8;
+ 
+ #include "ethtool-kernel.h"
+