[AVR32] Add support for AT32AP7001 and AT32AP7002

These are derivatives of the AT32AP7000 chip, which means that most of
the code stays the same. Rename a few files, functions, definitions
and config symbols to reflect that they apply to all AP700x chips, and
exclude some platform devices from chips where they aren't present.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 52dff40..fbd6112 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -223,7 +223,7 @@
 
 config AT32AP700X_WDT
 	tristate "AT32AP700x watchdog"
-	depends on CPU_AT32AP7000
+	depends on CPU_AT32AP700X
 	help
 	  Watchdog timer embedded into AT32AP700x devices. This will reboot
 	  your system when the timeout is reached.