Rename bootretry functions and remove #ifdefs

Add a bootretry_ prefix to these two functions, and remove the need for
the #ifdef around everything (it moves to the Makefile).

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/common/cmd_mem.c b/common/cmd_mem.c
index 9bd7c0e..1febddb 100644
--- a/common/cmd_mem.c
+++ b/common/cmd_mem.c
@@ -1098,9 +1098,7 @@
 	if (argc != 2)
 		return CMD_RET_USAGE;
 
-#ifdef CONFIG_BOOT_RETRY_TIME
-	reset_cmd_timeout();	/* got a good command to get here */
-#endif
+	bootretry_reset_cmd_timeout();	/* got a good command to get here */
 	/* We use the last specified parameters, unless new ones are
 	 * entered.
 	 */
@@ -1159,9 +1157,8 @@
 			if (incrflag)
 				addr += nbytes ? -size : size;
 			nbytes = 1;
-#ifdef CONFIG_BOOT_RETRY_TIME
-			reset_cmd_timeout(); /* good enough to not time out */
-#endif
+			/* good enough to not time out */
+			bootretry_reset_cmd_timeout();
 		}
 #ifdef CONFIG_BOOT_RETRY_TIME
 		else if (nbytes == -2) {
@@ -1177,11 +1174,9 @@
 #endif
 			nbytes = endp - console_buffer;
 			if (nbytes) {
-#ifdef CONFIG_BOOT_RETRY_TIME
 				/* good enough to not time out
 				 */
-				reset_cmd_timeout();
-#endif
+				bootretry_reset_cmd_timeout();
 				if (size == 4)
 					*((u32 *)ptr) = i;
 #ifdef CONFIG_SYS_SUPPORT_64BIT_DATA