drivers: Fix dangling dependencies and add missing driver, subsys, and DTS BUILD files

Remove dangling renesas dependency from drivers/pinctrl/BUILD.bazel.
Remove non-existent vendor dependencies from drivers/sensor/BUILD.bazel.
Add drivers/spi/spi_nxp_lpspi/BUILD.bazel for NXP SPI driver.
Add subsys/pm/policy/BUILD.bazel and depend on it from subsys/pm/BUILD.bazel.
Add subsys/shell/modules/kernel_service/BUILD.bazel.
Add dts/arm, dts/arm/nxp, dts/arm/syna, and dts/vendor BUILD.bazel files.
Add lib/posix/c_lib_ext/BUILD.bazel and wire it into lib/BUILD.bazel.

Change-Id: I0297b981ef2a5d70eac1c7f2b47ec806aa7247d3
Reviewed-on: https://pigweed-review.googlesource.com/c/third_party/github/zephyrproject-rtos/zephyr/+/462337