MAINTAINERS: Fix path typos and similar

We have a number of cases where the in-tree path of files and where
they presumably were when the first version of a patch were posted
differ slightly.  Correct these to point at where the files are now.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/vamrs/rock960_rk3399/MAINTAINERS b/board/vamrs/rock960_rk3399/MAINTAINERS
index 5ee5256..8821672 100644
--- a/board/vamrs/rock960_rk3399/MAINTAINERS
+++ b/board/vamrs/rock960_rk3399/MAINTAINERS
@@ -1,7 +1,7 @@
 ROCK960-RK3399
 M:      Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
 S:      Maintained
-F:      board/rockchip/rock960_rk3399
+F:      board/vamrs/rock960_rk3399/
 F:      include/configs/rock960_rk3399.h
 F:      configs/rock960-rk3399_defconfig