Move options to register

This saves some bytes because it is not necessary anymore to address
options in RAM.

rampinglight.c

@@ -75,17 +75,18 @@ typedef union {
 const uint8_t __flash ramp_values[] = { RAMP_VALUES };
 const uint8_t __flash fixed_values[] = { FIXED_VALUES };
 
-register uint8_t microticks asm("r7");
-uint8_t ticks = 0;
-
 uint8_t cold_boot_detect[CBD_BYTES] __attribute__((section(".noinit")));
-Options options __attribute__((section(".noinit")));
 enum State state __attribute__((section(".noinit")));
 uint8_t output __attribute__((section(".noinit")));
 uint8_t fast_presses __attribute__((section(".noinit")));
 uint8_t ramping_up __attribute__((section(".noinit")));
+
+register Options options asm("r7");
 register uint8_t output_eeprom asm("r6");
 register uint8_t output_eeprom_pos asm("r5");
+register uint8_t microticks asm("r4");
+
+uint8_t ticks = 0;
 
 /**
  * Busy wait delay with ms resolution. This function allows to choose the