slides/yocto-bsp: replace SERIAL_CONSOLE by SERIAL_CONSOLES

SERIAL_CONSOLE was deprecated in 2.6 and removed in 4.2.

Signed-off-by: Michael Opdenacker <[email protected]>

slides/yocto-bsp/yocto-bsp.tex

@@ -111,7 +111,7 @@ \subsection{Hardware configuration files}
 # we need the kernel to be installed in the final image
 IMAGE_INSTALL:append = " kernel-image kernel-devicetree"
 SDCARD_ROOTFS ?= "${DEPLOY_DIR_IMAGE}/${IMAGE_NAME}.rootfs.ext3"
-SERIAL_CONSOLE = "115200 ttyAMA0"
+SERIAL_CONSOLES = "115200;ttyAMA0"
 MACHINE_FEATURES = "usbgadget usbhost vfat"
     \end{minted}
   \end{block}