sh64: Fix up early serial fixmap.

This was conditionalized on CONFIG_EARLY_PRINTK, which has subsequently
gone away. Now that the serial driver always supports the early console,
make sure we always establish the mapping.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/kernel/head_64.S

@@ -220,7 +220,6 @@ clear_DTLB:
 	add.l	r22, r63, r22		/* Sign extend */
 	putcfg	r21, 0, r22		/* Set MMUDR[0].PTEH */
 
-#ifdef CONFIG_EARLY_PRINTK
 	/*
 	 * Setup a DTLB translation for SCIF phys.
 	 */
@@ -231,7 +230,6 @@ clear_DTLB:
 	movi    0xfa03, r22	/* 0xfa030000, fixed SCIF virt */
 	shori   0x0003, r22
 	putcfg  r21, 0, r22	/* PTEH last */
-#endif
 
 	/*
 	 * Set cache behaviours.