MAINTAINERS: Clean up the F: entries for some EDAC drivers

The edac_altera entry stopped at the "." and needed "[ch]" to match
both the driver and the header file.

The edac_skx entry only matched on ".c" files so didn't include skx_common.h

Signed-off-by: Tony Luck <tony.luck@intel.com>

MAINTAINERS

@@ -2486,7 +2486,7 @@ F:	drivers/clk/socfpga/
 ARM/SOCFPGA EDAC SUPPORT
 M:	Dinh Nguyen <dinguyen@kernel.org>
 S:	Maintained
-F:	drivers/edac/altera_edac.
+F:	drivers/edac/altera_edac.[ch]
 
 ARM/SPREADTRUM SoC SUPPORT
 M:	Orson Zhai <orsonzhai@gmail.com>
@@ -6402,7 +6402,7 @@ EDAC-SKYLAKE
 M:	Tony Luck <tony.luck@intel.com>
 L:	linux-edac@vger.kernel.org
 S:	Maintained
-F:	drivers/edac/skx_*.c
+F:	drivers/edac/skx_*.[ch]
 
 EDAC-TI
 M:	Tero Kristo <t-kristo@ti.com>