mx8dx: Normalize MACHINEOVERRIDES implementation

The imx8dx-mek machine is similar to imx8qxp-mek and so the mx8qxp override
was included in the MACHINEOVERRIDES hierarchy. This is non-standard, and
the rework of the SOC overrides didn't handle it properly, leading to a
build break:

```
Log data follows:
| DEBUG: Executing shell function do_compile
| NOTE: 8QX boot binary build
| cp: failed to access '/home/aquino/src/ossystems/oel-platform/build/tmp/work/imx8dx_mek-oel-linux/imx-boot/1.0-r0/git/iMX8DX/scfw_tcm.bin': Not a directory
| WARNING: /home/aquino/src/ossystems/oel-platform/build/tmp/work/imx8dx_mek-oel-linux/imx-boot/1.0-r0/temp/run.do_compile.1809636:179 exit 1 from 'cp /home/aquino/src/ossystems/oel-platform/build/tmp/deploy/images/imx8dx-mek/imx-boot$
tools/scfw_tcm.bin /home/aquino/src/ossystems/oel-platform/build/tmp/work/imx8dx_mek-oel-linux/imx-boot/1.0-r0/git/iMX8DX/scfw_tcm.bin'
| WARNING: Backtrace (BB generated script):
|       #1: compile_mx8x, /home/aquino/src/ossystems/oel-platform/build/tmp/work/imx8dx_mek-oel-linux/imx-boot/1.0-r0/temp/run.do_compile.1809636, line 179
|       #2: do_compile, /home/aquino/src/ossystems/oel-platform/build/tmp/work/imx8dx_mek-oel-linux/imx-boot/1.0-r0/temp/run.do_compile.1809636, line 151
|       #3: main, /home/aquino/src/ossystems/oel-platform/build/tmp/work/imx8dx_mek-oel-linux/imx-boot/1.0-r0/temp/run.do_compile.1809636, line 189
ERROR: Task (/home/aquino/src/ossystems/oel-platform/sources/meta-freescale/recipes-bsp/imx-mkimage/imx-boot_1.0.bb:do_compile) failed with exit code '1'
```

Fix the problem by removing mx8qxp from the mx8dx hierarchy and adapting
existing mx8qxp overrides appropriately.

Fixes: #1027
Signed-off-by: Tom Hochstein <tom.hochstein@nxp.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/recipes-bsp/imx-mkimage/imx-boot_1.0.bb b/recipes-bsp/imx-mkimage/imx-boot_1.0.bb
index d5330897..88689ead 100644
--- a/recipes-bsp/imx-mkimage/imx-boot_1.0.bb
+++ b/recipes-bsp/imx-mkimage/imx-boot_1.0.bb
@@ -73,6 +73,7 @@ REV_OPTION ?= ""
 REV_OPTION:mx8qxp-nxp-bsp = \
     "${@bb.utils.contains('MACHINE_FEATURES', 'soc-revb0', '', \
                                                            'REV=C0', d)}"
+REV_OPTION:mx8dx-nxp-bsp  = "REV=C0"
 
 compile_mx8m() {
     bbnote 8MQ/8MM/8MN/8MP boot binary build