enable poll (#8867)

config poll

bsp/nxp/imx/imx6ull-smart/.config

@@ -29,13 +29,17 @@ CONFIG_RT_TIMER_THREAD_STACK_SIZE=4096
 #
 # kservice optimization
 #
-CONFIG_RT_KSERVICE_USING_STDLIB=y
-# CONFIG_RT_KSERVICE_USING_STDLIB_MEMORY is not set
-# CONFIG_RT_KSERVICE_USING_TINY_SIZE is not set
 # CONFIG_RT_USING_TINY_FFS is not set
-# CONFIG_RT_KPRINTF_USING_LONGLONG is not set
 # end of kservice optimization
 
+#
+# klibc optimization
+#
+# CONFIG_RT_KLIBC_USING_STDLIB is not set
+# CONFIG_RT_KLIBC_USING_TINY_SIZE is not set
+# CONFIG_RT_KLIBC_USING_PRINTF_LONGLONG is not set
+# end of klibc optimization
+
 CONFIG_RT_USING_DEBUG=y
 CONFIG_RT_DEBUGING_COLOR=y
 CONFIG_RT_DEBUGING_CONTEXT=y
@@ -322,7 +326,7 @@ CONFIG_RT_LIBC_TZ_DEFAULT_SEC=0
 CONFIG_RT_USING_POSIX_FS=y
 CONFIG_RT_USING_POSIX_DEVIO=y
 CONFIG_RT_USING_POSIX_STDIO=y
-# CONFIG_RT_USING_POSIX_POLL is not set
+CONFIG_RT_USING_POSIX_POLL=y
 # CONFIG_RT_USING_POSIX_SELECT is not set
 # CONFIG_RT_USING_POSIX_EVENTFD is not set
 # CONFIG_RT_USING_POSIX_EPOLL is not set

bsp/nxp/imx/imx6ull-smart/rtconfig.h

@@ -22,8 +22,11 @@
 
 /* kservice optimization */
 
-#define RT_KSERVICE_USING_STDLIB
 /* end of kservice optimization */
+
+/* klibc optimization */
+
+/* end of klibc optimization */
 #define RT_USING_DEBUG
 #define RT_DEBUGING_COLOR
 #define RT_DEBUGING_CONTEXT
@@ -223,6 +226,7 @@
 #define RT_USING_POSIX_FS
 #define RT_USING_POSIX_DEVIO
 #define RT_USING_POSIX_STDIO
+#define RT_USING_POSIX_POLL
 #define RT_USING_POSIX_TERMIOS
 #define RT_USING_POSIX_DELAY
 #define RT_USING_POSIX_CLOCK