meta-tq: dynamic-layers: imx-oei-tq: allow overwrite debug settings

Prepare for production release while leave it up to local.conf or
<machine>.conf to enable debug console output.

Signed-off-by: Markus Niebel <Markus.Niebel@ew.tq-group.com>
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
(cherry picked from commit e1d2c6b)

Author: tq-niebelm

dynamic-layers/arm-toolchain/recipes-bsp/imx-oei/imx-oei.inc

@@ -11,12 +11,13 @@ OEI_CONFIGS ?= "UNDEFINED"
 OEI_CORE    ?= "UNDEFINED"
 OEI_SOC     ?= "UNDEFINED"
 OEI_BOARD   ?= "UNDEFINED"
+OEI_DEBUG   ?= "0"
 
 LDFLAGS[unexport] = "1"
 
 EXTRA_OEMAKE = "\
     board=${OEI_BOARD} \
-    DEBUG=1 \
+    DEBUG=${OEI_DEBUG} \
     OEI_CROSS_COMPILE=arm-none-eabi-"
 
 do_configure() {