drm/ast: Rename AST_IO_GR_PORT to AST_IO_VGAGRI

Rename AST_IO_GR_PORT to AST_IO_VGAGRI 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/20231017083653.10063-9-tzimmermann@suse.de

drivers/gpu/drm/ast/ast_drv.h

@@ -266,7 +266,7 @@ static inline bool __ast_gen_is_eq(struct ast_device *ast, unsigned long gen)
 #define AST_IO_VGADRR			(0x47)
 #define AST_IO_VGADWR			(0x48)
 #define AST_IO_VGAPDR		        (0x49)
-#define AST_IO_GR_PORT			(0x4E)
+#define AST_IO_VGAGRI			(0x4E)
 #define AST_IO_CRTC_PORT		(0x54)
 #define AST_IO_INPUT_STATUS1_READ	(0x5A)
 #define AST_IO_MISC_PORT_READ		(0x4C)

drivers/gpu/drm/ast/ast_mode.c

@@ -332,7 +332,7 @@ static void ast_set_std_reg(struct ast_device *ast,
 
 	/* Set GR */
 	for (i = 0; i < 9; i++)
-		ast_set_index_reg(ast, AST_IO_GR_PORT, i, stdtable->gr[i]);
+		ast_set_index_reg(ast, AST_IO_VGAGRI, i, stdtable->gr[i]);
 }
 
 static void ast_set_crtc_reg(struct ast_device *ast,