Host default environment doesn't provide/require gnutls headers needed
for building mkeficapsule tools, and as tegra target doesn't require EFI
capability, disable the build of mentioned tool.
Fixes: 92cd360aac ("uboot-tegra: bump version to 2025.04")
Signed-off-by: Tomasz Maciej Nowak <tmn505@gmail.com>
Link: https://patchwork.ozlabs.org/project/openwrt/patch/20250713125126.215092-1-tmn505@terefe.re/
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
