powerpc, 8xx: remove support for 8xx

There was for long time no activity in the 8xx area.
We need to go further and convert to Kconfig, but it
turned out, nobody is interested anymore in 8xx,
so remove it (with a heavy heart, knowing that I remove
here the root of U-Boot).

Signed-off-by: Heiko Schocher <hs@denx.de>
diff --git a/common/bootm_os.c b/common/bootm_os.c
index e102406..d9e6e93 100644
--- a/common/bootm_os.c
+++ b/common/bootm_os.c
@@ -56,7 +56,6 @@
 	void (*loader)(bd_t *, image_header_t *, char *, char *);
 	image_header_t *os_hdr, *hdr;
 	ulong kernel_data, kernel_len;
-	char *consdev;
 	char *cmdline;
 
 	if (flag != BOOTM_STATE_OS_GO)
@@ -88,17 +87,6 @@
 			os_hdr = hdr;
 	}
 
-	consdev = "";
-#if   defined(CONFIG_8xx_CONS_SMC1)
-	consdev = "smc1";
-#elif defined(CONFIG_8xx_CONS_SMC2)
-	consdev = "smc2";
-#elif defined(CONFIG_8xx_CONS_SCC2)
-	consdev = "scc2";
-#elif defined(CONFIG_8xx_CONS_SCC3)
-	consdev = "scc3";
-#endif
-
 	if (argc > 0) {
 		ulong len;
 		int   i;
@@ -127,7 +115,7 @@
 	 *   arg[2]: char pointer to the console device to use
 	 *   arg[3]: char pointer to the boot arguments
 	 */
-	(*loader)(gd->bd, os_hdr, consdev, cmdline);
+	(*loader)(gd->bd, os_hdr, "", cmdline);
 
 	return 1;
 }