Pin mbedtls to version 2.2.1

Version 2.3.0 doesn't compile with ARM-TF due to unused but set
variables:

  CC      plat/arm/css/common/css_bl1_setup.c
/working/platforms/mbedtls/library/x509_crt.c: In function
'mbedtls_x509_crt_parse':
/working/platforms/mbedtls/library/x509_crt.c:972:39: error: unused
variable 'total_failed' [-Werror=unused-variable]
     int success = 0, first_error = 0, total_failed = 0;
                                       ^
/working/platforms/mbedtls/library/x509_crt.c:972:22: error: unused
variable 'first_error' [-Werror=unused-variable]
     int success = 0, first_error = 0, total_failed = 0;
                      ^
/working/platforms/mbedtls/library/x509_crt.c:972:9: error: unused
variable 'success' [-Werror=unused-variable]
     int success = 0, first_error = 0, total_failed = 0;
         ^

So pin our manifest to the last known-good version: 2.2.1.

Signed-off-by: Ryan Harkin <ryan.harkin@linaro.org>

0 files changed, 0 insertions, 0 deletions