Use [u]int32_t instead of __[u]int32_t in sys/types.h

Avoid this error in -ffreestanding mode:
sys/types.h:45:1: error: unknown type name '__uint32_t'

Change-Id: I826b36873862d1d70b47401f31f4369a77666b8e
Signed-off-by: Pavel Chupin <pavel.v.chupin@intel.com>
diff --git a/libc/include/sys/types.h b/libc/include/sys/types.h
index f8261f4..dc847d2 100644
--- a/libc/include/sys/types.h
+++ b/libc/include/sys/types.h
@@ -42,7 +42,7 @@
 typedef __uid_t uid_t;
 typedef __kernel_pid_t __pid_t;
 typedef __pid_t pid_t;
-typedef __uint32_t __id_t;
+typedef uint32_t __id_t;
 typedef __id_t id_t;
 
 typedef unsigned long blkcnt_t;
@@ -63,19 +63,19 @@
 typedef __kernel_key_t __key_t;
 typedef __key_t key_t;
 
-typedef __uint32_t __ino_t;
+typedef uint32_t __ino_t;
 typedef __ino_t ino_t;
 
-typedef __uint32_t __nlink_t;
+typedef uint32_t __nlink_t;
 typedef __nlink_t nlink_t;
 
 typedef void* __timer_t;
 typedef __timer_t timer_t;
 
-typedef __int32_t __suseconds_t;
+typedef int32_t __suseconds_t;
 typedef __suseconds_t suseconds_t;
 
-typedef __uint32_t __useconds_t;
+typedef uint32_t __useconds_t;
 typedef __useconds_t useconds_t;
 
 #if !defined(__LP64__)
@@ -113,10 +113,10 @@
 
 #if !defined(__LP64__)
 /* This historical accident means that we had a signed socklen_t on 32-bit architectures. */
-typedef __int32_t __socklen_t;
+typedef int32_t __socklen_t;
 #else
 /* LP64 still has a 32-bit socklen_t. */
-typedef __uint32_t __socklen_t;
+typedef uint32_t __socklen_t;
 #endif
 typedef __socklen_t socklen_t;