pw_crypto: Bazel file cleanup

*  Remove some unnecessary `tags = ["manual"]` attributes (the affected
   targets now build, so there's no reason to exclude them).
*  Simplify the third_party/mbedtls/BUILD.bazel file. This will make it
   easier for users to parse, but also easier for our copybara
   automation to handle.

Change-Id: I047cde9d6de257a40dd6a8e2fa4b65228011694f
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/137792
Reviewed-by: Ali Zhang <[email protected]>
Commit-Queue: Auto-Submit <[email protected]>
Pigweed-Auto-Submit: Ted Pudlik <[email protected]>

pw_crypto/BUILD.bazel

@@ -77,7 +77,6 @@ pw_cc_library(
         "public_overrides/mbedtls/pw_crypto/sha256_backend.h",
     ],
     includes = ["public_overrides/mbedtls"],
-    tags = ["manual"],
     deps = [
         ":sha256_facade",
         "@mbedtls",
@@ -128,8 +127,6 @@ pw_cc_library(
 pw_cc_test(
     name = "sha256_mock_test",
     srcs = ["sha256_mock_test.cc"],
-    # TODO(b/236321905): Requires BUILD.bazel files for mbedtls
-    tags = ["manual"],
     deps = [
         ":sha256_mock",
         "//pw_unit_test",

third_party/mbedtls/BUILD.bazel

@@ -21,21 +21,13 @@ package(
     default_visibility = ["//visibility:public"],
 )
 
-# Ready-made configurations
-mbedtls_configs = [
-    ("default", "configs/config_default.h"),
-]
-
 # Config targets.
-[
-    pw_cc_library(
-        name = "%s_config" % config_name,
-        hdrs = [
-            config_header,
-            "configs/config_pigweed_common.h",
-        ],
-        defines = ['MBEDTLS_CONFIG_FILE=\\"%s\\"' % config_header],
-        includes = ["."],
-    )
-    for config_name, config_header in mbedtls_configs
-]
+pw_cc_library(
+    name = "default_config",
+    hdrs = [
+        "configs/config_default.h",
+        "configs/config_pigweed_common.h",
+    ],
+    defines = ['MBEDTLS_CONFIG_FILE=\\"configs/config_default.h\\"'],
+    includes = ["."],
+)