armcm_reset: Add a new helper file defining command_reset()

Add a generic ARM Cortex-M implementation of the "reset" command.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

src/lpc176x/Makefile

@@ -14,7 +14,7 @@ $(OUT)klipper.elf: $(OUT)src/generic/armcm_link.ld
 # Add source files
 src-y += lpc176x/main.c lpc176x/gpio.c
 src-y += generic/armcm_boot.c generic/armcm_irq.c generic/armcm_timer.c
-src-y += generic/crc16_ccitt.c
+src-y += generic/armcm_reset.c generic/crc16_ccitt.c
 src-y += ../lib/lpc176x/device/system_LPC17xx.c
 src-$(CONFIG_HAVE_GPIO_ADC) += lpc176x/adc.c
 src-$(CONFIG_HAVE_GPIO_I2C) += lpc176x/i2c.c

src/lpc176x/main.c

@@ -60,13 +60,6 @@ enable_pclock(uint32_t pclk)
     }
 }
 
-void
-command_reset(uint32_t *args)
-{
-    NVIC_SystemReset();
-}
-DECL_COMMAND_FLAGS(command_reset, HF_IN_SHUTDOWN, "reset");
-
 // Main entry point
 int
 main(void)