imx-base.inc: consolidate `IMX_EXTRA_FIRMWARE` definition

We should have a single definition for `IMX_EXTRA_FIRMWARE` variable as
this is SoC specific and not machine, or recipe, dependent. This removes
multiple assignments from:

- conf/machine/imx8mq-evk.conf
- conf/machine/include/imx8mm-evk.inc
- conf/machine/include/imx8mn-evk.inc
- conf/machine/include/imx8mp-evk.inc
- recipes-bsp/imx-mkimage/imx-boot_1.0.bb

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
(cherry picked from commit 63d73925950aa35ec1378696c0f5dcfd2fef9e83)

1 files changed, 6 insertions, 0 deletions

diff --git a/conf/machine/include/imx-base.inc b/conf/machine/include/imx-base.inc
index 43e78282..297637af 100644
--- a/conf/machine/include/imx-base.inc
+++ b/conf/machine/include/imx-base.inc
@@ -343,6 +343,12 @@ SIGGEN_EXCLUDE_SAFE_RECIPE_DEPS:append = " \
     imx-test->virtual/imxvpu \
 "
 
+# Firmware used for boot.
+IMX_EXTRA_FIRMWARE                  ?= ""
+IMX_EXTRA_FIRMWARE:mx8-generic-bsp   = "firmware-imx-8 imx-sc-firmware imx-seco"
+IMX_EXTRA_FIRMWARE:mx8m-generic-bsp  = "firmware-imx-8m"
+IMX_EXTRA_FIRMWARE:mx8x-generic-bsp  = "imx-sc-firmware imx-seco"
+
 # Firmware
 MACHINE_FIRMWARE ?= ""
 MACHINE_FIRMWARE:append:mx27-generic-bsp   = " firmware-imx-vpu-imx27"