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/pine64/pinephone-pro-rk3399/MAINTAINERS b/board/pine64/pinephone-pro-rk3399/MAINTAINERS
index c923ff1..bc2dcdd 100644
--- a/board/pine64/pinephone-pro-rk3399/MAINTAINERS
+++ b/board/pine64/pinephone-pro-rk3399/MAINTAINERS
@@ -1,7 +1,7 @@
 PINEPHONE_PRO
 M:	Peter Robinson <pbrobinson@gmail.com>
 S:	Maintained
-F:	board/pine64/rk3399-pinephone-pro/
+F:	board/pine64/pinephone-pro-rk3399/
 F:	include/configs/rk3399-pinephone-pro.h
 F:	arch/arm/dts/rk3399-pinephone-pro.dts
 F:	arch/arm/dts/rk3399-pinephone-pro-u-boot.dtsi