MAINTAINERS: Change FSL DDR EDAC maintainership

Last email from York Sun is from 2019, so move him to Credits.  Frank Li
volunteered to keep maintaining the driver, add him as a reviewer for now.

Suggested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20241003193348.102234-1-krzysztof.kozlowski@linaro.org

CREDITS

@@ -3791,6 +3791,10 @@ S: Department of Zoology, University of Washington
 S: Seattle, WA  98195-1800
 S: USA
 
+N: York Sun
+E: york.sun@nxp.com
+D: Freescale DDR EDAC
+
 N: Eugene Surovegin
 E: ebs@ebshome.net
 W: https://kernel.ebshome.net/

MAINTAINERS

@@ -8124,7 +8124,8 @@ S:	Maintained
 F:	drivers/edac/e7xxx_edac.c
 
 EDAC-FSL_DDR
-M:	York Sun <york.sun@nxp.com>
+R:	Frank Li <Frank.Li@nxp.com>
+L:	imx@lists.linux.dev
 L:	linux-edac@vger.kernel.org
 S:	Maintained
 F:	drivers/edac/fsl_ddr_edac.*