selftests/powerpc: unmark non-kernel-doc comments

Drop the 'beginning of kernel-doc' notation markers (/**)
in places that are not in kernel-doc format.
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Reviewed-by: NDaniel Axtens <dja@axtens.net>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210325200820.16594-1-rdunlap@infradead.org

tools/testing/selftests/powerpc/tm/tm-trap.c

@@ -66,7 +66,7 @@ void trap_signal_handler(int signo, siginfo_t *si, void *uc)
 	/* Get thread endianness: extract bit LE from MSR */
 	thread_endianness = MSR_LE & ucp->uc_mcontext.gp_regs[PT_MSR];
 
-	/***
+	/*
 	 * Little-Endian Machine
 	 */
 
@@ -126,7 +126,7 @@ void trap_signal_handler(int signo, siginfo_t *si, void *uc)
 		}
 	}
 
-	/***
+	/*
 	 * Big-Endian Machine
 	 */