gpio: add (most of) driver framework for boot sysmodule usage

stratosphere/boot/source/boot_fan_enable.cpp

@@ -16,22 +16,14 @@
 #include <stratosphere.hpp>
 #include "boot_fan_enable.hpp"
 
-#include "gpio/gpio_utils.hpp"
-
 namespace ams::boot {
 
-    namespace {
-
-        /* Convenience definitions. */
-        constexpr u32 GpioPadName_FanEnable = 0x4B;
-
-    }
-
     void SetFanEnabled() {
         if (spl::GetHardwareType() == spl::HardwareType::Copper) {
-            boot::gpio::Configure(GpioPadName_FanEnable);
-            boot::gpio::SetDirection(GpioPadName_FanEnable, GpioDirection_Output);
-            boot::gpio::SetValue(GpioPadName_FanEnable, GpioValue_High);
+            /* TODO */
+            /* boot::gpio::Configure(GpioPadName_FanEnable);                          */
+            /* boot::gpio::SetDirection(GpioPadName_FanEnable, GpioDirection_Output); */
+            /* boot::gpio::SetValue(GpioPadName_FanEnable, GpioValue_High);           */
         }
     }