Add missing includes.

Change-Id: I06ea08400efa511e627be37a4fd70fbdfadea2e6
diff --git a/minui/events.c b/minui/events.c
index df7dad4..d98a774 100644
--- a/minui/events.c
+++ b/minui/events.c
@@ -16,6 +16,8 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
 #include <fcntl.h>
 #include <dirent.h>
 #include <sys/epoll.h>
diff --git a/minui/graphics.c b/minui/graphics.c
index 6049d85..ec39433 100644
--- a/minui/graphics.c
+++ b/minui/graphics.c
@@ -16,6 +16,7 @@
 
 #include <stdbool.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include <fcntl.h>
diff --git a/minui/graphics_adf.c b/minui/graphics_adf.c
index ac6d64e..289c3be 100644
--- a/minui/graphics_adf.c
+++ b/minui/graphics_adf.c
@@ -19,6 +19,7 @@
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include <sys/cdefs.h>
diff --git a/minui/graphics_fbdev.c b/minui/graphics_fbdev.c
index c0c1bcb..a087899 100644
--- a/minui/graphics_fbdev.c
+++ b/minui/graphics_fbdev.c
@@ -16,6 +16,7 @@
 
 #include <stdbool.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include <fcntl.h>
diff --git a/minui/resources.c b/minui/resources.c
index 2bae4de..f645c4b 100644
--- a/minui/resources.c
+++ b/minui/resources.c
@@ -15,6 +15,7 @@
  */
 
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include <fcntl.h>