fix bad includes and missing macro for ioctl test

Author: cowtoolz

libc/include/llvm-libc-macros/linux/sys-ioctl-macros.h

@@ -15,5 +15,6 @@
 // around the definitions of macros like _IO, _IOR, _IOW, and _IOWR that I don't
 // think is worth digging into right now.
 #define TIOCGETD 0x5424
+#define FIONREAD	0x541B
 
 #endif // LLVM_LIBC_MACROS_LINUX_SYS_IOCTL_MACROS_H

libc/src/sys/ioctl/ioctl.h

@@ -10,7 +10,6 @@
 #define LLVM_LIBC_SRC_SYS_IOCTL_IOCTL_H
 
 #include "src/__support/macros/config.h"
-#include <sys/ioctl.h>
 
 namespace LIBC_NAMESPACE_DECL {
 

libc/test/src/sys/ioctl/linux/CMakeLists.txt

@@ -8,7 +8,6 @@ add_libc_unittest(
     ioctl_test.cpp
   DEPENDS
     libc.include.sys_ioctl
-    libc.include.sys_filio
     libc.src.sys.ioctl.ioctl
     libc.src.errno.errno
 )

libc/test/src/sys/ioctl/linux/ioctl_test.cpp

@@ -9,7 +9,6 @@
 #include "src/errno/libc_errno.h"
 #include "src/sys/ioctl/ioctl.h"
 #include "test/UnitTest/ErrnoSetterMatcher.h"
-#include <sys/filio.h>
 #include <sys/ioctl.h>
 
 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;