Fix bazel crypto target dependencies.

The crypto target depends on having access to the fips_fragments when
compiling bcm.c.  Explicitly load and add them as a dependency of that
target.

Change-Id: Ibe6f589cc63b653c52eb2c32b445ec31996b6247
Reviewed-on: https://boringssl-review.googlesource.com/16946
Reviewed-by: Matt Braithwaite <mab@google.com>
Reviewed-by: Adam Langley <agl@google.com>

util/BUILD.toplevel

@@ -23,6 +23,7 @@ load(
     "crypto_sources",
     "crypto_sources_linux_x86_64",
     "crypto_sources_mac_x86_64",
+    "fips_fragments",
     "ssl_headers",
     "ssl_internal_headers",
     "ssl_c_sources",
@@ -92,7 +93,7 @@ boringssl_copts_cxx = boringssl_copts + [
 cc_library(
     name = "crypto",
     srcs = crypto_sources + crypto_internal_headers + crypto_sources_asm,
-    hdrs = crypto_headers,
+    hdrs = crypto_headers + fips_fragments,
     copts = boringssl_copts_c11,
     includes = ["src/include"],
     linkopts = select({