video_core: Resolve more variable shadowing scenarios pt.3

Cleans out the rest of the occurrences of variable shadowing and makes
any further occurrences of shadowing compiler errors.

src/video_core/textures/texture.h

@@ -146,7 +146,7 @@ enum class MsaaMode : u32 {
 };
 
 union TextureHandle {
-    TextureHandle(u32 raw) : raw{raw} {}
+    /* implicit */ TextureHandle(u32 raw_) : raw{raw_} {}
 
     u32 raw;
     BitField<0, 20, u32> tic_id;