aice: add Andes AICE support

Andes AICE uses USB to transfer packets between OpenOCD and AICE.
It uses high-level USB commands to control targets instead of using
JTAG signals. I define an interface as aice_port_api_s. It contains
all basic operations needed by target-dependent code.

Change-Id: I117bc4f938fab2732e44c509ea68b30172d6fdb9
Signed-off-by: Hsiangkai Wang <hsiangkai@gmail.com>
Reviewed-on: http://openocd.zylin.com/1256
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>

src/target/Makefile.am

@@ -31,6 +31,7 @@ libtarget_la_SOURCES = \
 	$(ARM_MISC_SRC) \
 	$(AVR32_SRC) \
 	$(MIPS32_SRC) \
+	$(NDS32_SRC) \
 	avrt.c \
 	dsp563xx.c \
 	dsp563xx_once.c \
@@ -107,6 +108,9 @@ MIPS32_SRC = \
 	mips32_dmaacc.c \
 	mips_ejtag.c
 
+NDS32_SRC = \
+	nds32_reg.c
+
 
 noinst_HEADERS = \
 	algorithm.h \
@@ -162,7 +166,11 @@ noinst_HEADERS = \
 	avr32_ap7k.h \
 	avr32_jtag.h \
 	avr32_mem.h \
-	avr32_regs.h
+	avr32_regs.h \
+	nds32.h \
+	nds32_edm.h \
+	nds32_insn.h \
+	nds32_reg.h
 
 ocddatadir = $(pkglibdir)
 nobase_dist_ocddata_DATA =