sb/via/k8t890: Clean up CONFIG_VGA usage

Remove guards and let the linker take care of it.

Change-Id: I96ad8002845082816153ca5762543768998a5619
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/19744
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>

src/southbridge/via/k8t890/chrome.c

@@ -21,7 +21,6 @@
 #include <string.h> /* for memset */
 #include "k8x8xx.h"
 
-#if CONFIG_VGA
 #include <pc80/vga_io.h>
 #include <pc80/vga.h>
 #include <arch/io.h>
@@ -109,8 +108,6 @@ chrome_vga_init(struct device *dev)
 	vga_cr_mask(0x33, 0x08, 0x08); /* Enable Prefetch Mode */
 }
 
-#endif /* CONFIG_VGA */
-
 /*
  *
  */
@@ -138,7 +135,7 @@ chrome_init(struct device *dev)
 
 	//k8m890_host_fb_direct_set(fb_address);
 
-#if CONFIG_VGA
+	if (IS_ENABLED(SOUTHBRIDGE_VIA_K8M890_VGA_EN)) {
 		/* Now set up the VGA console */
 		vga_io_init(); /* Enable full IO access */
 
@@ -150,7 +147,7 @@ chrome_init(struct device *dev)
 
 		/* if we don't have console, at least print something... */
 		vga_line_write(0, "Chrome VGA Textmode initialized.");
-#endif /* CONFIG_VGA */
+	}
 }
 
 static struct device_operations