fix linking problem when not using draw.

Reference: /n/atom/patch/applied/nixkbdfix
Date: Tue Jun 17 22:28:11 CES 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/src/nix/port/nodraw.c	Thu Jan  1 00:00:00 1970
+++ /sys/src/nix/port/nodraw.c	Tue Jun 17 22:28:00 2014
@@ -0,0 +1,11 @@
+#include	"u.h"
+#include	"../port/lib.h"
+#include	"mem.h"
+#include	"dat.h"
+#include	"fns.h"
+#include	"../port/error.h"
+
+void
+drawactive(int)
+{
+}
--- /sys/src/nix/k10/cpu	Tue Jun 17 22:28:00 2014
+++ /sys/src/nix/k10/cpu	Tue Jun 17 22:28:00 2014
@@ -76,6 +76,7 @@
 misc +dev
 #	mp		mpacpi lapic ioapic msi pci sipi
 	acpi		acpiio lapic ioapic msi pci sipi
+	nodraw
 
 boot cpu
 	il
--- /sys/src/nix/k10/cpud	Tue Jun 17 22:28:00 2014
+++ /sys/src/nix/k10/cpud	Tue Jun 17 22:28:00 2014
@@ -75,6 +75,7 @@
 misc +dev
 #	mp		mpacpi lapic ioapic msi pci sipi
 	acpi		acpiio lapic ioapic msi pci sipi
+	nodraw
 
 boot cpu
 	il
--- /sys/src/nix/k10/cpud	Tue Jun 17 22:28:00 2014
+++ /sys/src/nix/k10/cpud	Tue Jun 17 22:28:00 2014
@@ -75,6 +75,7 @@
 misc +dev
 #	mp		mpacpi lapic ioapic msi pci sipi
 	acpi		acpiio lapic ioapic msi pci sipi
+	nodraw
 
 boot cpu
 	il