PSA_WANT_xxx needs to be defined in the old-style config mechanism

Without MBEDTLS_PSA_CRYPTO_CONFIG, PSA_WANT_xxx needs to be defined,
for the sake of code that calls the PSA API (TLS code, tests, sample
apps).

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/docs/proposed/psa-conditional-inclusion-c.md b/docs/proposed/psa-conditional-inclusion-c.md
index 753aaf7..5212c59 100644
--- a/docs/proposed/psa-conditional-inclusion-c.md
+++ b/docs/proposed/psa-conditional-inclusion-c.md
@@ -5,7 +5,7 @@
 
 This is currently a proposal for Mbed TLS. It is not currently on track for standardization in PSA.
 
-Time-stamp: "2020/09/21 18:07:09 GMT"
+Time-stamp: "2020/10/12 21:23:39 GMT"
 
 ## Introduction
 
@@ -129,7 +129,7 @@
 -------------------------  --------------------------------  -----------------------------------
 `MBEDTLS_xxx_C`            `mbedtls/config.h` (U) or         `mbedtls/config.h` (U)
                            `mbedtls/config_psa.h` (D)
-`PSA_WANT_xxx`             `psa/crypto_config.h` (U)         N/A
+`PSA_WANT_xxx`             `psa/crypto_config.h` (U)         `mbedtls/config_psa.h (D)
 `MBEDTLS_PSA_BUILTIN_xxx`  `mbedtls/config_psa.h` (D)        `mbedtls/config_psa.h` (D)
 `MBEDTLS_PSA_ACCEL_xxx`    `mbedtls/crypto_drivers` (G)      N/A
 ------------------------------------------------------------------------------------------------