[POWERPC] powerpc: PA Semi PWRficient platform support

Base patch for PA6T and PA6T-1682M. This introduces the
arch/powerpc/platform/pasemi directory, together with basic
implementations for various setup.

Much of this was based on other platform code, i.e. Maple, etc.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 904798f..c9dcec7 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -413,6 +413,17 @@
           This option enables support for the Maple 970FX Evaluation Board.
 	  For more informations, refer to <http://www.970eval.com>
 
+config PPC_PASEMI
+	depends on PPC_MULTIPLATFORM && PPC64
+	bool "PA Semi SoC-based platforms"
+	default n
+	select MPIC
+	select PPC_UDBG_16550
+	select GENERIC_TBSYNC
+	help
+	  This option enables support for PA Semi's PWRficient line
+	  of SoC processors, including PA6T-1682M
+
 config PPC_CELL
 	bool
 	default n