esp8266: Update 512k linker script, renaming modpyb to machine.

esp8266/esp8266_512k.ld

@@ -137,16 +137,16 @@ SECTIONS
         *lexerstr32.o(.literal* .text*)
         *utils.o(.literal* .text*)
         *modpyb.o(.literal*, .text*)
-        *modpybpin.o(.literal*, .text*)
-        *modpybpwm.o(.literal*, .text*)
-        *modpybrtc.o(.literal*, .text*)
-        *modpybadc.o(.literal*, .text*)
-        *modpybuart.o(.literal*, .text*)
+        *machine_pin.o(.literal*, .text*)
+        *machine_pwm.o(.literal*, .text*)
+        *machine_rtc.o(.literal*, .text*)
+        *machine_adc.o(.literal*, .text*)
+        *machine_uart.o(.literal*, .text*)
         *modpybi2c.o(.literal*, .text*)
         *modmachine.o(.literal*, .text*)
-        *modmachinewdt.o(.literal*, .text*)
-        *modpybspi.o(.literal*, .text*)
-        *modpybhspi.o(.literal*, .text*)
+        *machine_wdt.o(.literal*, .text*)
+        *machine_spi.o(.literal*, .text*)
+        *machine_hspi.o(.literal*, .text*)
         *hspi.o(.literal*, .text*)
         *modesp.o(.literal* .text*)
         *modnetwork.o(.literal* .text*)