uki.bbclass: drop serial console from kernel command line

The kernel will continue using console from firmware which is
much better on HW when we may not know at build time which
console HW and drivers are available, e.g. like on
genericarm64 machine.

(From OE-Core rev: cf2ed52a94f5fa57cc6d93418dfb49b30e2240cc)

Signed-off-by: Mikko Rapeli <mikko.rapeli@linaro.org>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes-recipe/uki.bbclass

@@ -81,7 +81,7 @@ UKIFY_CMD ?= "ukify build"
 UKI_CONFIG_FILE ?= "${UNPACKDIR}/uki.conf"
 UKI_FILENAME ?= "uki.efi"
 UKI_KERNEL_FILENAME ?= "${KERNEL_IMAGETYPE}"
-UKI_CMDLINE ?= "rootwait root=LABEL=root console=${KERNEL_CONSOLE}"
+UKI_CMDLINE ?= "rootwait root=LABEL=root"
 # secure boot keys and cert, needs sbsign-tools-native (meta-secure-core)
 #UKI_SB_KEY ?= ""
 #UKI_SB_CERT ?= ""