linux-user: fix GPROF build failure

When linux-user/exit was introduced we failed to move the gprof
include at the same time. The CI didn't notice because it only builds
system emulation. Fix it for those that still find gprof useful.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Message-Id: <20190502092728.32727-1-alex.bennee@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

linux-user/exit.c

@@ -18,6 +18,9 @@
  */
 #include "qemu/osdep.h"
 #include "qemu.h"
+#ifdef TARGET_GPROF
+#include <sys/gmon.h>
+#endif
 
 #ifdef CONFIG_GCOV
 extern void __gcov_dump(void);

linux-user/syscall.c

@@ -59,9 +59,6 @@
 #ifdef CONFIG_TIMERFD
 #include <sys/timerfd.h>
 #endif
-#ifdef TARGET_GPROF
-#include <sys/gmon.h>
-#endif
 #ifdef CONFIG_EVENTFD
 #include <sys/eventfd.h>
 #endif