MIPS: BCM63xx: Remove duplicate CONFIG_CMDLINE.

Builtin cmdline is copied by arch_mem_init().
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/812/Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/bcm63xx/prom.c

@@ -40,9 +40,6 @@ void __init prom_init(void)
 	reg &= ~mask;
 	bcm_perf_writel(reg, PERF_CKCTL_REG);
 
-	/* assign command line from kernel config */
-	strcpy(arcs_cmdline, CONFIG_CMDLINE);
-
 	/* register gpiochip */
 	bcm63xx_gpio_init();