tegra: Move cpu_init_cp15() to arch_cpu_init()

This call is more of an architecture requirement than a board
one, so move it there.

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

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

@@ -80,6 +80,10 @@ int arch_cpu_init(void)
 {
 	/* Fire up the Cortex A9 */
 	tegra2_start();
+
+	/* We didn't do this init in start.S, so do it now */
+	cpu_init_cp15();
+
 	return 0;
 }
 #endif

board/nvidia/common/board.c

@@ -143,9 +143,6 @@ int board_early_init_f(void)
 	uart_ids |= UARTD;
 #endif
 
-	/* We didn't do this init in start.S, so do it now */
-	cpu_init_cp15();
-
 	/* Initialize essential common plls */
 	clock_early_init();