improve enum readability

A purely cosmetic change making it easier to convert numbers into
enums when analyzing debug printouts.

BRANCH=none
BUG=none
TEST='make buildall -j' still succeeds.

Change-Id: I078a1d253fe928a1390cbed9baf7786a239fa01d
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/268402
Reviewed-by: Bill Richardson <wfrichar@chromium.org>

include/module_id.h

@@ -11,42 +11,42 @@
 #include "common.h"
 
 enum module_id {
-	MODULE_ADC,
+	MODULE_ADC,	/* 0 */
 	MODULE_CHARGER,
 	MODULE_CHIPSET,
 	MODULE_CLOCK,
 	MODULE_COMMAND,
-	MODULE_DMA,
+	MODULE_DMA,	/* 5 */
 	MODULE_EXTPOWER,
 	MODULE_GPIO,
 	MODULE_HOOK,
 	MODULE_HOST_COMMAND,
-	MODULE_HOST_EVENT,
+	MODULE_HOST_EVENT,	/* 10 */
 	MODULE_I2C,
 	MODULE_KEYBOARD,
 	MODULE_KEYBOARD_SCAN,
 	MODULE_LIGHTBAR,
-	MODULE_LPC,
+	MODULE_LPC,	/* 15 */
 	MODULE_PECI,
 	MODULE_PMU,
 	MODULE_PORT80,
 	MODULE_POWER_LED,
-	MODULE_PWM_FAN,
+	MODULE_PWM_FAN,	/* 20 */
 	MODULE_PWM_KBLIGHT,
 	MODULE_PWM_LED,
 	MODULE_SPI,
 	MODULE_SPI_MASTER,
-	MODULE_SWITCH,
+	MODULE_SWITCH,	/* 25 */
 	MODULE_SYSTEM,
 	MODULE_TASK,
 	MODULE_THERMAL,
 	MODULE_UART,
-	MODULE_USART,
+	MODULE_USART,	/* 30 */
 	MODULE_USB,
 	MODULE_USB_DEBUG,
 	MODULE_USB_PD,
 	MODULE_USB_PORT_POWER,
-	MODULE_USB_SWITCH,
+	MODULE_USB_SWITCH,	/* 35 */
 	MODULE_VBOOT,
 
 	/* Module count; not an actual module */