firmware_loader: rework crypto dependencies

The crypto dependencies for the firmwware loader are incomplete,
in particular a built-in FW_LOADER fails to link against a modular
crypto hash driver:

ld.lld: error: undefined symbol: crypto_alloc_shash
ld.lld: error: undefined symbol: crypto_shash_digest
ld.lld: error: undefined symbol: crypto_destroy_tfm
>>> referenced by main.c
>>>               drivers/base/firmware_loader/main.o:(fw_log_firmware_info) in archive vmlinux.a

Rework this to use the usual 'select' from the driver module,
to respect the built-in vs module dependencies, and add a
more verbose crypto dependency to the debug option to prevent
configurations that lead to a link failure.

Fixes: 02fe26f2 ("firmware_loader: Add debug message with checksum for FW file")
Reviewed-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20230414080329.76176-1-arnd@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>