tegra: Move ap20.h header into arch location

We want to include this from board code, so move the header into
an easily-accessible location.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

arch/arm/cpu/armv7/tegra2/ap20.c

@@ -21,9 +21,9 @@
 * MA 02111-1307 USA
 */
 
-#include "ap20.h"
 #include <asm/io.h>
 #include <asm/arch/tegra2.h>
+#include <asm/arch/ap20.h>
 #include <asm/arch/clk_rst.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/pmc.h>

arch/arm/cpu/armv7/tegra2/board.c

@@ -23,12 +23,12 @@
 
 #include <common.h>
 #include <asm/io.h>
-#include "ap20.h"
+#include <asm/arch/ap20.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/funcmux.h>
+#include <asm/arch/pmc.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/arch/tegra2.h>
-#include <asm/arch/pmc.h>
 
 DECLARE_GLOBAL_DATA_PTR;