sparc64: repair calling incorrect hweight function from stubs

Commit v4.12-rc4-1-g9289ea7f introduced a mistake that made the
64-bit hweight stub call the 16-bit hweight function.

Fixes: 9289ea7f ("sparc64: Use indirect calls in hamming weight stubs")
Signed-off-by: NJan Engelhardt <jengelh@inai.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/sparc/lib/hweight.S

@@ -44,8 +44,8 @@ EXPORT_SYMBOL(__arch_hweight32)
 	.previous
 
 ENTRY(__arch_hweight64)
-	sethi	%hi(__sw_hweight16), %g1
-	jmpl	%g1 + %lo(__sw_hweight16), %g0
+	sethi	%hi(__sw_hweight64), %g1
+	jmpl	%g1 + %lo(__sw_hweight64), %g0
 	 nop
 ENDPROC(__arch_hweight64)
 EXPORT_SYMBOL(__arch_hweight64)