coco: virt: arm64: Do not enable cca guest driver by default

As per the guidelines, new drivers may not be set to default on.
An expert user can always select it.

Reported-by: Dan Williams <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Steven Price <[email protected]>
Cc: Sami Mujawar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Suzuki K Poulose <[email protected]>
Reviewed-by: Steven Price <[email protected]>
Signed-off-by: Catalin Marinas <[email protected]>

Author: Suzuki K Poulose

drivers/virt/coco/arm-cca-guest/Kconfig

@@ -1,7 +1,6 @@
 config ARM_CCA_GUEST
 	tristate "Arm CCA Guest driver"
 	depends on ARM64
-	default m
 	select TSM_REPORTS
 	help
 	  The driver provides userspace interface to request and