Unify non-shifted and shifted JEDEC access

Some Parallel bus chips have a 16-bit mode and an 8-bit mode. They use
normal JEDEC addresses for 16-bit mode and shifted addresses (by 1 bit)
for 8-bit mode. Some programmers can access them in 16-bit mode, but on
all flashrom-supported programmers so far, we access them in 8-bit mode.
This means we have to shift the addresses but apart from the addresses
we can share the code.

This patch makes this possible by checking the chip's FEATURE_ADDR_SHIFTED
flag in common JEDEC functions and applying the right addresses respectively.

Corresponding to flashrom svn r1840.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
diff --git a/Makefile b/Makefile
index 8f2d68d..d0d6454 100644
--- a/Makefile
+++ b/Makefile
@@ -351,7 +351,7 @@
 # Flash chip drivers and bus support infrastructure.
 
 CHIP_OBJS = jedec.o stm50.o w39.o w29ee011.o \
-	sst28sf040.o m29f400bt.o 82802ab.o \
+	sst28sf040.o 82802ab.o \
 	sst49lfxxxc.o sst_fwhub.o flashchips.o spi.o spi25.o spi25_statusreg.o \
 	opaque.o sfdp.o en29lv640b.o at45db.o