ArmPlatformPkg/LcdGraphicsOutputDxe: move headers into driver directory

The HdLcd.h and PL111Lcd.h header files are internal headers that should
not be used by other drivers. So move them from Include/Drivers into the
driver directory instead.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>

ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/HdLcd.c

@@ -18,8 +18,7 @@
 #include <Library/MemoryAllocationLib.h>
 #include <Library/PcdLib.h>
 
-#include <Drivers/HdLcd.h>
-
+#include "HdLcd.h"
 #include "LcdGraphicsOutputDxe.h"
 
 /**********************************************************************

ArmPlatformPkg/Drivers/LcdGraphicsOutputDxe/PL111Lcd.c

@@ -15,9 +15,8 @@
 #include <Library/IoLib.h>
 #include <Library/MemoryAllocationLib.h>
 
-#include <Drivers/PL111Lcd.h>
-
 #include "LcdGraphicsOutputDxe.h"
+#include "PL111Lcd.h"
 
 /**********************************************************************
  *