sh64: Don't use PHYSADDR() for output_addr calculation.

Opencode the MEMORY_START offset directly, sh64 uses a slightly different
calculation.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

arch/sh/boot/compressed/misc.c

@@ -128,9 +128,13 @@ void decompress_kernel(void)
 {
 	unsigned long output_addr;
 
+#ifdef CONFIG_SUPERH64
+	output_addr = (CONFIG_MEMORY_START + 0x2000);
+#else
 	output_addr = PHYSADDR((unsigned long)&_text+PAGE_SIZE);
 #ifdef CONFIG_29BIT
 	output_addr |= P2SEG;
+#endif
 #endif
 
 	output = (unsigned char *)output_addr;