MLECO-2946: Draw boxes directly on the LCD

* No longer copy the source image
* Boxes are drawn directly to LCD rather than on source image
* Change c style casts to static casts

Signed-off-by: Richard Burton <richard.burton@arm.com>
Change-Id: Ib8e926cb1a87bc2c40424eb5aace40170c526f1d
diff --git a/source/hal/components/lcd_mps3/include/glcd_mps3.h b/source/hal/components/lcd_mps3/include/glcd_mps3.h
index c2810c0..313d4ca 100644
--- a/source/hal/components/lcd_mps3/include/glcd_mps3.h
+++ b/source/hal/components/lcd_mps3/include/glcd_mps3.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021 Arm Limited. All rights reserved.
+ * Copyright (c) 2021-2022 Arm Limited. All rights reserved.
  * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -182,7 +182,7 @@
  * @param[in]  downsample_factor    Factor by which the image
  *                                  is downsampled by.
  */
-void GLCD_Image(void *data, const uint32_t width,
+void GLCD_Image(const void *data, const uint32_t width,
                const uint32_t height, const uint32_t channels,
                const uint32_t pos_x, const uint32_t pos_y,
                const uint32_t downsample_factor);