T210: P2571: Turn CPU fan on

CPU board (E2530) has a fan - turn it on via GPIO to keep
the SoC cool.

Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/arch/arm/mach-tegra/board2.c b/arch/arm/mach-tegra/board2.c
index 36bcfb0..2927b4e 100644
--- a/arch/arm/mach-tegra/board2.c
+++ b/arch/arm/mach-tegra/board2.c
@@ -60,6 +60,7 @@
 __weak void pin_mux_spi(void) {}
 __weak void gpio_early_init_uart(void) {}
 __weak void pin_mux_display(void) {}
+__weak void start_cpu_fan(void) {}
 
 #if defined(CONFIG_TEGRA_NAND)
 __weak void pin_mux_nand(void)
@@ -230,6 +231,8 @@
 		setenv("cpu_ns_mode", "");
 	}
 #endif
+	start_cpu_fan();
+
 	return 0;
 }