MAINTAINERS: Update sysctl tree location

To more efficiently co-maintain the sysctl subsystem a shared repository
has been created at https://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl.git
and the sysctl-next branch that Luis Chamberlain ([email protected]) maintained at
https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git/log/?h=sysctl-next
has moved to the shared sysctl-next branch located at
https://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl.git/log/?h=sysctl-next.
This commit changes the sysctl tree in MAINTAINERS to reflect this change.

Acked-by: Kees Cook <[email protected]>
Acked-by: Luis Chamberlain <[email protected]>
Signed-off-by: Joel Granados <[email protected]>

Author: Joelgranados

MAINTAINERS

@@ -17616,7 +17616,7 @@ M:	Joel Granados <[email protected]>
 L:	[email protected]
 L:	[email protected]
 S:	Maintained
-T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git sysctl-next
+T:	git git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl.git sysctl-next
 F:	fs/proc/proc_sysctl.c
 F:	include/linux/sysctl.h
 F:	kernel/sysctl-test.c