hdparm: fix compilation with musl

Signed-off-by: Richard Kunze <richard.kunze@web.de>

utils/hdparm/Makefile

@@ -19,6 +19,8 @@ PKG_LICENSE:=BSD-Style Open Source License
 
 include $(INCLUDE_DIR)/package.mk
 
+TARGET_CFLAGS+=-D_GNU_SOURCE
+
 define Package/hdparm
   SECTION:=utils
   CATEGORY:=Utilities

utils/hdparm/patches/001-fix-includes.patch

@@ -0,0 +1,20 @@
+--- a/hdparm.h
++++ b/hdparm.h
+@@ -2,6 +2,7 @@
+ 
+ //#undef __KERNEL_STRICT_NAMES
+ #include <linux/types.h>
++#include <sys/types.h>
+ 
+ #if !defined(__GNUC__) && !defined(__attribute__)
+ #define __attribute__(x)
+--- a/sysfs.c
++++ b/sysfs.c
+@@ -12,6 +12,7 @@
+ #include <stdio.h>
+ #include <fcntl.h>
+ #include <errno.h>
++#include <limits.h>
+ #include <dirent.h>
+ #include <sys/stat.h>
+ #include <linux/types.h>