GSP/GPU: Make FrameBufferInfo::active_fb use the entire u32 instead of just one bit.

The GSP module reads the entire 32 bit word from this field to determine the framebuffer.

src/core/hle/service/gsp_gpu.h

@@ -62,8 +62,7 @@ struct InterruptRelayQueue {
 static_assert(sizeof(InterruptRelayQueue) == 0x40, "InterruptRelayQueue struct has incorrect size");
 
 struct FrameBufferInfo {
-    BitField<0, 1, u32> active_fb; // 0 = first, 1 = second
-
+    u32 active_fb; // 0 = first, 1 = second
     u32 address_left;
     u32 address_right;
     u32 stride;   // maps to 0x1EF00X90 ?