qapi: Document QCryptodevBackendServiceType

QCryptodevBackendServiceType was introduced by
bc304a6442 (cryptodev: Introduce server type in QAPI). However there
is a lack of member description.

Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Drop QCryptodevBackendServiceType from pragma documentation-exceptions]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20240911112545.2248881-9-armbru@redhat.com>

qapi/cryptodev.json

@@ -27,6 +27,16 @@
 #
 # The supported service types of a crypto device.
 #
+# @cipher: Symmetric Key Cipher service
+#
+# @hash: Hash service
+#
+# @mac: Message Authentication Codes service
+#
+# @aead: Authenticated Encryption with Associated Data service
+#
+# @akcipher: Asymmetric Key Cipher service
+#
 # Since: 8.0
 ##
 { 'enum': 'QCryptodevBackendServiceType',

qapi/pragma.json

@@ -61,7 +61,6 @@
         'MemoryDeviceInfoKind',
         'NetClientDriver',
         'ObjectType',
-        'QCryptodevBackendServiceType',
         'QKeyCode',
         'RbdAuthMode',
         'RbdImageEncryptionFormat',