EDAC, ghes: Do not enable it by default

Leave it to the user to decide whether to enable this or not. Otherwise,
platform-specific drivers won't initialize (currently, EDAC supports
only a single platform driver loaded).
Signed-off-by: Borislav Petkov <bp@suse.de>

drivers/edac/Kconfig

@@ -55,7 +55,6 @@ config EDAC_DECODE_MCE
 config EDAC_GHES
 	bool "Output ACPI APEI/GHES BIOS detected errors via EDAC"
 	depends on ACPI_APEI_GHES && (EDAC=y)
-	default y
 	help
 	  Not all machines support hardware-driven error report. Some of those
 	  provide a BIOS-driven error report mechanism via ACPI, using the