Don't add .eh_frame sections to SMM image

We don't need exception handlers and they waste space.

Change-Id: I98a34d1c9638e8c4168edbfb4b1cddde8a64623f
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/6105
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>

src/cpu/x86/smm/smm.ld

@@ -49,5 +49,7 @@ SECTIONS
 		*(.comment)
 		*(.note)
 		*(.note.*)
+		*(.eh_frame)
+		*(.debug_*)
 	}
 }

src/cpu/x86/smm/smm_tseg.ld

@@ -67,5 +67,7 @@ SECTIONS
 		*(.comment)
 		*(.note)
 		*(.note.*)
+		*(.eh_frame)
+		*(.debug_*)
 	}
 }