Ensure TAP ESC is fully booted

src/drivers/tap_esc/drv_tap_esc.h

@@ -85,7 +85,7 @@
 #define RPMSTOPPED (RPMMIN - 10)
 
 
-#define MAX_BOOT_TIME_MS		 (500) // Minimum time to wait after Power on before sending commands
+#define MAX_BOOT_TIME_MS		 (550) // Minimum time to wait after Power on before sending commands
 
 #pragma pack(push,1)
 

src/drivers/tap_esc/tap_esc.cpp

@@ -232,7 +232,7 @@ TAP_ESC::init()
 
 	ASSERT(!_initialized);
 
-	/* Respect boot time requierd by the ESC FW */
+	/* Respect boot time required by the ESC FW */
 
 	hrt_abstime uptime_us = hrt_absolute_time();