Improve use of automake conditionals for FTDI-based JTAG drivers:

- Remove once-used XXX_FTD2XX symbols; replace with XXX_DRIVER symbols.
- Enabled when either libftdi or FTD2xx driver should be built.
- Eliminates redundant DRIVERSFILE assignment in JTAG automake input.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2177 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/jtag/Makefile.am

@@ -32,12 +32,8 @@ endif
 if DUMMY
 DRIVERFILES += dummy.c
 endif
-if FT2232_LIBFTDI
+if FT2232_DRIVER
 DRIVERFILES += ft2232.c
-else
-if FT2232_FTD2XX
-DRIVERFILES += ft2232.c
-endif
 endif
 if AMTJTAGACCEL
 DRIVERFILES += amt_jtagaccel.c
@@ -54,12 +50,8 @@ endif
 if BITQ
 DRIVERFILES += bitq.c
 endif
-if PRESTO_LIBFTDI
+if PRESTO_DRIVER
 DRIVERFILES += presto.c
-else
-if PRESTO_FTD2XX
-DRIVERFILES += presto.c
-endif
 endif
 if USBPROG
 DRIVERFILES += usbprog.c