build: Re-enable options for libwpa_client.so and wpa_passphrase

build: Re-enable options for libwpa_client.so and wpa_passphrase

Commit a41a29192e5d ("build: Pull common fragments into a build.rules
file") introduced a regression into wpa_supplicant build process. The
build target libwpa_client.so is not built regardless of whether the
option CONFIG_BUILD_WPA_CLIENT_SO is set or not. This happens because
this config option is used before it is imported from the configuration
file. Moving its use after including build.rules does not help: the
variable ALL is processed by build.rules and further changes are not
applied. Similarly, option CONFIG_NO_WPA_PASSPHRASE also does not work
as expected: wpa_passphrase is always built regardless of whether the
option is set or not.

Re-enable these options by adding both build targets to _all
dependencies.

Fixes: a41a29192e5d ("build: Pull common fragments into a build.rules file")
Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>