zephyr: Rename CONFIG_CONSOLE_PULL to CONFIG_CONSOLE_SUBSYS.

Following a similar change in the Zephyr Project.

ports/zephyr/prj_base.conf

@@ -5,7 +5,7 @@ CONFIG_STDOUT_CONSOLE=y
 CONFIG_CONSOLE_HANDLER=y
 CONFIG_UART_CONSOLE_DEBUG_SERVER_HOOKS=y
 
-CONFIG_CONSOLE_PULL=y
+CONFIG_CONSOLE_SUBSYS=y
 CONFIG_CONSOLE_GETCHAR=y
 CONFIG_CONSOLE_GETCHAR_BUFSIZE=128
 CONFIG_CONSOLE_PUTCHAR_BUFSIZE=128

ports/zephyr/prj_qemu_cortex_m3.conf

@@ -1,6 +1,6 @@
 # Interrupt-driven UART console has emulation artifacts under QEMU,
 # disable it
-CONFIG_CONSOLE_PULL=n
+CONFIG_CONSOLE_SUBSYS=n
 
 # Networking drivers
 # SLIP driver for QEMU

ports/zephyr/prj_qemu_x86.conf

@@ -1,6 +1,6 @@
 # Interrupt-driven UART console has emulation artifacts under QEMU,
 # disable it
-CONFIG_CONSOLE_PULL=n
+CONFIG_CONSOLE_SUBSYS=n
 
 # Networking drivers
 # SLIP driver for QEMU

ports/zephyr/src/zephyr_start.c

@@ -30,7 +30,7 @@
 int real_main(void);
 
 void main(void) {
-#ifdef CONFIG_CONSOLE_PULL
+#ifdef CONFIG_CONSOLE_SUBSYS
     console_init();
 #else
     zephyr_getchar_init();

ports/zephyr/uart_core.c

@@ -36,7 +36,7 @@
 
 // Receive single character
 int mp_hal_stdin_rx_chr(void) {
-#ifdef CONFIG_CONSOLE_PULL
+#ifdef CONFIG_CONSOLE_SUBSYS
     return console_getchar();
 #else
     return zephyr_getchar();
@@ -45,7 +45,7 @@ int mp_hal_stdin_rx_chr(void) {
 
 // Send string of given length
 void mp_hal_stdout_tx_strn(const char *str, mp_uint_t len) {
-#ifdef CONFIG_CONSOLE_PULL
+#ifdef CONFIG_CONSOLE_SUBSYS
     while (len--) {
         char c = *str++;
         while (console_putchar(c) == -1) {