check-source-text: whitelist WOLFSSL_OCSP_SCREEN_RESPONDER

WOLFSSL_OCSP_SCREEN_RESPONDER (from the OCSP AIA responder SSRF
screening work) is only ever enabled via
CPPFLAGS=-DWOLFSSL_OCSP_SCREEN_RESPONDER, a form the check-source-text
"unknown macros" -D pattern does not match, so the subtest reports it as
an unrecognized macro and fails. Add it to .wolfssl_known_macro_extras.

Also fix the C lexical ordering of HWCAP2_SME, which sorted after
HWCAP_ASIMDRDM ('2' precedes '_' in the C locale) and tripped the "not
in C lexical order" warning.

Author: Frauschi

.wolfssl_known_macro_extras

@@ -334,8 +334,8 @@ HSM_KEY_TYPE_HMAC_512
 HSM_OP_KEY_GENERATION_FLAGS_CREATE
 HSM_OP_KEY_GENERATION_FLAGS_UPDATE
 HSM_SVC_KEY_STORE_FLAGS_UPDATE
-HWCAP_ASIMDRDM
 HWCAP2_SME
+HWCAP_ASIMDRDM
 HWCAP_SVE
 IDIRECT_DEV_RANDOM
 IDIRECT_DEV_TIME
@@ -939,6 +939,7 @@ WOLFSSL_NRF51_AES
 WOLFSSL_NXP_CASPER_ECC_MUL2ADD
 WOLFSSL_NXP_CASPER_ECC_MULMOD
 WOLFSSL_NXP_LPC55S6X
+WOLFSSL_OCSP_SCREEN_RESPONDER
 WOLFSSL_OLDTLS_AEAD_CIPHERSUITES
 WOLFSSL_OLD_SET_CURVES_LIST
 WOLFSSL_OLD_TIMINGPADVERIFY