[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/arch/avr32/Makefile b/arch/avr32/Makefile
index f75d52c..17a3529 100644
--- a/arch/avr32/Makefile
+++ b/arch/avr32/Makefile
@@ -16,7 +16,7 @@
 CFLAGS_MODULE	+= -mno-relax
 LDFLAGS_vmlinux	+= --relax
 
-cpuflags-$(CONFIG_CPU_AT32AP7000)	+= -mcpu=ap7000
+cpuflags-$(CONFIG_PLATFORM_AT32AP)	+= -march=ap
 
 KBUILD_CFLAGS	+= $(cpuflags-y)
 KBUILD_AFLAGS	+= $(cpuflags-y)