[MIPS] TXx9: rename asm-mips/mach-jmr3927 to asm-mips/mach-tx39xx

Rename mach-jmr3927 directory to more proper name to make adding other
platforms easier.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 517828e..452cb9e 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -200,3 +200,13 @@
 	else
 		spurious_interrupt();
 }
+
+/* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
+#ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
+static unsigned long __swizzle_addr_none(unsigned long port)
+{
+	return port;
+}
+unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
+EXPORT_SYMBOL(__swizzle_addr_b);
+#endif