timekeeping: Boot should be boottime for coarse ns accessor

Somewhere in all the patchsets before, this cleanup got lost.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Link: https://lkml.kernel.org/r/20190624091539.13512-1-Jason@zx2c4.com

Documentation/core-api/timekeeping.rst

@@ -105,7 +105,7 @@ Some additional variants exist for more specialized cases:
 		ktime_t ktime_get_coarse_clocktai( void )
 
 .. c:function:: u64 ktime_get_coarse_ns( void )
-		u64 ktime_get_coarse_boot_ns( void )
+		u64 ktime_get_coarse_boottime_ns( void )
 		u64 ktime_get_coarse_real_ns( void )
 		u64 ktime_get_coarse_clocktai_ns( void )
 

include/linux/timekeeping.h

@@ -131,7 +131,7 @@ static inline u64 ktime_get_coarse_real_ns(void)
 	return ktime_to_ns(ktime_get_coarse_real());
 }
 
-static inline u64 ktime_get_coarse_boot_ns(void)
+static inline u64 ktime_get_coarse_boottime_ns(void)
 {
 	return ktime_to_ns(ktime_get_coarse_boottime());
 }