Revert "ppsi: pick new master and act accordingly"

This reverts commit 03062ea3.

The patch is wrong, because it duplicates

    9491e61b

 ppsi: pick new master and fix building accordingly

which does the "fixing" in a more elegant way. With both in history,
we now have

   ./ppsi/include/generated/autoconf.h:13:0: warning:
           "CONFIG_VLAN_ARRAY_SIZE" redefined
   generated/autoconf.h:14:0: note: this is the previous definition

Besides, the reverted commit was not even using new ppsi master (we
did it before this commit).

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Makefile

@@ -14,7 +14,6 @@ SIZE =		$(CROSS_COMPILE)size
 AUTOCONF = $(CURDIR)/include/generated/autoconf.h
 
 PPSI = ppsi
-PPSI_CONFIG = ppsi/include/generated/autoconf.h
 
 # we miss CONFIG_ARCH_LM32 as we have no other archs by now
 obj-y = arch/lm32/crt0.o arch/lm32/irq.o
@@ -163,8 +162,7 @@ clean:
 	$(MAKE) -C tools clean
 
 %.o:		%.c
-	${CC} $(CFLAGS) $(PTPD_CFLAGS) $(INCLUDE_DIR) $(LIB_DIR) \
-		-include $(PPSI_CONFIG)  -c $*.c -o $@
+	${CC} $(CFLAGS) $(PTPD_CFLAGS) $(INCLUDE_DIR) $(LIB_DIR) -c $*.c -o $@
 
 tools:
 	$(MAKE) -C tools