drivers/intel/fsp2_0: Use coreboot uint8_t type for consistency

This patch replaces UINT8 with uint8_t to align with coreboot's
standard data type conventions.

This promotes consistency within the codebase.

BUG=b:242829490
TEST=Verified firmware splash screen functionality on google/rex0.

Change-Id: I524bf6dc83e4330f155e21691f6b161643f29bd8
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/81571
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
diff --git a/src/drivers/intel/fsp2_0/fsp_gop_blt.c b/src/drivers/intel/fsp2_0/fsp_gop_blt.c
index a43364a..8b64502 100644
--- a/src/drivers/intel/fsp2_0/fsp_gop_blt.c
+++ b/src/drivers/intel/fsp2_0/fsp_gop_blt.c
@@ -151,7 +151,7 @@
 		die("%s: out of memory. Consider increasing the `CONFIG_HEAP_SIZE`\n",
 			 __func__);
 
-	bmp_image = ((UINT8 *)logo_ptr) + header->ImageOffset;
+	bmp_image = ((uint8_t *)logo_ptr) + header->ImageOffset;
 	bmp_image_header = bmp_image;
 	gop_blt_buffer = gop_blt_ptr;
 	bmp_color_map = (efi_bmp_color_map *)(logo_ptr + sizeof(efi_bmp_image_header));