[crypto] Rename KEY= to PRIVKEY= and "key" to "privkey"

The setting name "key" conflicts with the setting name "key" already
in use by the 802.11 code.  Resolve the conflict by renaming the newer
setting to "privkey".

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/Makefile.housekeeping

 
 # (Single-element) list of client private keys
 #
-KEY_LIST := $(BIN)/.private_key.list
-ifeq ($(wildcard $(KEY_LIST)),)
-KEY_OLD := <invalid>
+ifdef KEY
+PRIVKEY	:= $(KEY) # Maintain backwards compatibility
+endif
+PRIVKEY_LIST := $(BIN)/.private_key.list
+ifeq ($(wildcard $(PRIVKEY_LIST)),)
+PRIVKEY_OLD := <invalid>
 else
-KEY_OLD := $(shell cat $(KEY_LIST))
+PRIVKEY_OLD := $(shell cat $(PRIVKEY_LIST))
 endif
-ifneq ($(KEY_OLD),$(KEY))
-$(shell $(ECHO) "$(KEY)" > $(KEY_LIST))
+ifneq ($(PRIVKEY_OLD),$(PRIVKEY))
+$(shell $(ECHO) "$(PRIVKEY)" > $(PRIVKEY_LIST))
 endif
 
-$(KEY_LIST) :
+$(PRIVKEY_LIST) :
 
-VERYCLEANUP += $(KEY_LIST)
+VERYCLEANUP += $(PRIVKEY_LIST)
 
 # Embedded client private key
 #
-KEY_INC := $(BIN)/.private_key.der
+PRIVKEY_INC := $(BIN)/.private_key.der
 
-ifdef KEY
-$(KEY_INC) : $(KEY) $(KEY_LIST)
+ifdef PRIVKEY
+$(PRIVKEY_INC) : $(PRIVKEY) $(PRIVKEY_LIST)
 	$(Q)$(OPENSSL) rsa -in $< -outform DER -out $@
 
-clientcert_DEPS += $(KEY_INC)
+clientcert_DEPS += $(PRIVKEY_INC)
 endif
 
-CLEANUP += $(KEY_INC)
+CLEANUP += $(PRIVKEY_INC)
 
-clientcert_DEPS += $(KEY_LIST)
+clientcert_DEPS += $(PRIVKEY_LIST)
 
-CFLAGS_clientcert += $(if $(KEY),-DPRIVATE_KEY="\"$(KEY_INC)\"")
+CFLAGS_clientcert += $(if $(PRIVKEY),-DPRIVATE_KEY="\"$(PRIVKEY_INC)\"")
 
 # These files use .incbin inline assembly to include a binary file.
 # Unfortunately ccache does not detect this dependency and caches

src/crypto/clientcert.c

 };
 
 /** Client private key setting */
-static struct setting key_setting __setting ( SETTING_CRYPTO ) = {
-	.name = "key",
+static struct setting privkey_setting __setting ( SETTING_CRYPTO ) = {
+	.name = "privkey",
 	.description = "Client private key",
 	.tag = DHCP_EB_KEY,
 	.type = &setting_type_hex,
 
 		/* Fetch new client private key, if any */
 		free ( key );
-		len = fetch_setting_copy ( NULL, &key_setting, &key );
+		len = fetch_setting_copy ( NULL, &privkey_setting, &key );
 		if ( len < 0 ) {
 			rc = len;
 			DBGC ( &client_certificate, "CLIENTCERT cannot fetch "