src/flash/nor: add hpmicro xpi support

- add hpmicro xpi support

Change-Id: I632558e72fa26cf1864614dd149985f09bcd9412
Signed-off-by: Ryan QIAN <jianghao.qian@hpmicro.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/8696
Reviewed-by: Tomas Vanek <vanekt@fbl.cz>
Tested-by: jenkins

src/flash/nor/Makefile.am

@@ -83,7 +83,8 @@ NOR_DRIVERS = \
 	%D%/w600.c \
 	%D%/xcf.c \
 	%D%/xmc1xxx.c \
-	%D%/xmc4xxx.c
+	%D%/xmc4xxx.c \
+	%D%/hpm_xpi.c
 
 NORHEADERS = \
 	%D%/artery.h \