imx6*.conf: Rework machine assignments for u-boot variables

The u-boot settings in imx6qdlsabresd, imx6qdlsabreauto, and imx6ulevk are
set to values that are correct for u-boot-fslc. Attempts to override these
settings to fix u-boot-imx builds have broken u-boot-fslc builds, and
vice versa. The u-boot-imx build is currently broken:

```
| install: cannot stat '/opt/work/upstream/fsl-xwayland/tmp/work/imx6qdlsabresd-fsl-linux-gnueabi/u-boot-imx/2020.04-r0/build/u-boot.img': No such file or directory
```

Rework the u-boot-fslc-specific overrides so they are used conditionally
only for u-boot-fslc. The default settings are correct for u-boot-imx.

Fixes: 880dbf2 ("fsl-base.inc: use conditional assignment for base variables")
Fixes: e83f54d ("machines: imx-base.inc: fix failing u-boot builds")
Signed-off-by: Tom Hochstein <tom.hochstein@nxp.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/conf/machine/imx6ulevk.conf b/conf/machine/imx6ulevk.conf
index a8acb43d..63047d02 100644
--- a/conf/machine/imx6ulevk.conf
+++ b/conf/machine/imx6ulevk.conf
@@ -23,11 +23,12 @@ KERNEL_DEVICETREE = " \
 "
 KERNEL_DEVICETREE_use-mainline-bsp = "imx6ul-14x14-evk.dtb"
 
-# Use fslc u-boot by default. See also imx-base.inc.
-UBOOT_MAKE_TARGET = ""
-UBOOT_SUFFIX = "img"
-SPL_BINARY = "SPL"
-WKS_FILE = "imx-uboot-spl-bootpart.wks.in"
+# These u-boot variables default to the correct settings for u-boot-imx.
+# Set overrides for u-boot-fslc.
+UBOOT_MAKE_TARGET_pn-u-boot-fslc = ""
+UBOOT_SUFFIX_pn-u-boot-fslc = "img"
+SPL_BINARY_pn-u-boot-fslc = "SPL"
+WKS_FILE_pn-u-boot-fslc = "imx-uboot-spl-bootpart.wks.in"
 
 UBOOT_CONFIG ??= " \
     sd \