common: Adds JEDEC SFDP v1.0 & v1.5 encoding and decoding
common: Adds JEDEC SFDP v1.0 & v1.5 encoding and decoding

Adds a header with JEDEC SFDP v1.0 (JESD216) & v1.5 (JESD216A)
encoding and decoding support to enable a part agnostic Serial NOR
Flash driver.

BRANCH=none
BUG=none
TEST=Tested through the spi_nor driver

Change-Id: I00b3f0434bfb8582aebad7cd0682445980b57773
Signed-off-by: Ewout van Bekkum <638f134dbc68778d6b859fb04a64baea2b00b021@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/321921
Reviewed-by: Bill Richardson <129945214b1d548d8e49b6c29c43094f8c78057f@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec