feat(p3io-ddr-tool): CLI tool to test and debug a real DDR P3IO

Extensive tool with subcommands to trigger the various
P3IO commands and run the P3IO + EXTIO DDR hardware
combo with a hardware test menu.

src/main/p3io-ddr-tool/Module.mk

@@ -0,0 +1,16 @@
+exes            += p3io-ddr-tool \
+
+ldflags_p3io-ddr-tool   := \
+    -lsetupapi \
+
+libs_p3io-ddr-tool     := \
+    extiodrv \
+    extio \
+    p3iodrv \
+    p3io \
+    hook \
+    util \
+
+src_p3io-ddr-tool      := \
+    main.c \
+    mode-test.c \