MAINTAINERS: Update STi and STM32 maintainers emails in remaining files

A previous series already update STMicroelectronics emails maintainers
but some files have been omitted (Makefile, .dts, .dtsi and .rst files).
Update Patrick and my email address with the one dedicated to upstream
activities.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/board/st/stm32h743-eval/MAINTAINERS b/board/st/stm32h743-eval/MAINTAINERS
index 3029c560..fda93db 100644
--- a/board/st/stm32h743-eval/MAINTAINERS
+++ b/board/st/stm32h743-eval/MAINTAINERS
@@ -1,5 +1,5 @@
 STM32H743 EVALUATION BOARD
-M:	Patrice Chotard <patrice.chotard@st.com>
+M:	Patrice Chotard <patrice.chotard@foss.st.com>
 S:	Maintained
 F:	board/st/stm32h743-eval
 F:	include/configs/stm32h743-eval.h