ARM: 6368/1: move the PrimeCell IDs to use macros

This make four macros for the PrimeCell ID register available to
drivers that use them witout using the PrimeCell/AMBA bus
abstraction and struct amba_device. It also moves the magic
PrimeCell CID "B105F00D" to the bus.h header file.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index d31590e..2737b97 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -298,7 +298,7 @@
 
 		amba_put_disable_pclk(dev);
 
-		if (cid == 0xb105f00d)
+		if (cid == AMBA_CID)
 			dev->periphid = pid;
 
 		if (!dev->periphid)