drm/ast: Rename AST_IO_DAC_DATA to AST_IO_VGAPDR

Rename AST_IO_DAC_DATA to AST_IO_VGAPDR to align naming
in the driver with documentation. No functional changes.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231017083653.10063-8-tzimmermann@suse.de

drivers/gpu/drm/ast/ast_drv.h

@@ -265,7 +265,7 @@ static inline bool __ast_gen_is_eq(struct ast_device *ast, unsigned long gen)
 #define AST_IO_VGASRI			(0x44)
 #define AST_IO_VGADRR			(0x47)
 #define AST_IO_VGADWR			(0x48)
-#define AST_IO_DAC_DATA		        (0x49)
+#define AST_IO_VGAPDR		        (0x49)
 #define AST_IO_GR_PORT			(0x4E)
 #define AST_IO_CRTC_PORT		(0x54)
 #define AST_IO_INPUT_STATUS1_READ	(0x5A)

drivers/gpu/drm/ast/ast_mode.c

@@ -57,11 +57,11 @@ static inline void ast_load_palette_index(struct ast_device *ast,
 {
 	ast_io_write8(ast, AST_IO_VGADWR, index);
 	ast_io_read8(ast, AST_IO_VGASRI);
-	ast_io_write8(ast, AST_IO_DAC_DATA, red);
+	ast_io_write8(ast, AST_IO_VGAPDR, red);
 	ast_io_read8(ast, AST_IO_VGASRI);
-	ast_io_write8(ast, AST_IO_DAC_DATA, green);
+	ast_io_write8(ast, AST_IO_VGAPDR, green);
 	ast_io_read8(ast, AST_IO_VGASRI);
-	ast_io_write8(ast, AST_IO_DAC_DATA, blue);
+	ast_io_write8(ast, AST_IO_VGAPDR, blue);
 	ast_io_read8(ast, AST_IO_VGASRI);
 }