[ab32vg1] Enable RT_USING_LIBC

bsp/bluetrum/ab32vg1-ab-prougen/.config

@@ -152,9 +152,9 @@ CONFIG_RT_USING_PIN=y
 #
 # POSIX layer and C standard library
 #
-# CONFIG_RT_USING_LIBC is not set
+CONFIG_RT_USING_LIBC=y
 # CONFIG_RT_USING_PTHREADS is not set
-CONFIG_RT_LIBC_USING_TIME=y
+# CONFIG_RT_USING_MODULE is not set
 
 #
 # Network

bsp/bluetrum/ab32vg1-ab-prougen/rtconfig.h

@@ -86,7 +86,7 @@
 
 /* POSIX layer and C standard library */
 
-#define RT_LIBC_USING_TIME
+#define RT_USING_LIBC
 
 /* Network */