Revert "Merge branch '2023-07-24-introduce-FF-A-suppport'"

This reverts commit d927d1a80843e1c3e2a3f0b8f6150790bef83da1, reversing
changes made to c07ad9520c6190070513016fdb495d4703a4a853.

These changes do not pass CI currently.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/lib/efi_loader/Kconfig b/lib/efi_loader/Kconfig
index 1cefdf0..a22e476 100644
--- a/lib/efi_loader/Kconfig
+++ b/lib/efi_loader/Kconfig
@@ -55,55 +55,13 @@
 	  stored as file /ubootefi.var on the EFI system partition.
 
 config EFI_MM_COMM_TEE
-	bool "UEFI variables storage service via the trusted world"
-	select ARM_FFA_TRANSPORT
-	select TEE
-	select OPTEE
+	bool "UEFI variables storage service via OP-TEE"
+	depends on OPTEE
 	help
-	  Allowing access to the MM SP services (SPs such as  StandAlonneMM, smm-gateway).
-	  When using the u-boot OP-TEE driver, StandAlonneMM is supported.
-	  When using the u-boot FF-A  driver any MM SP is supported.
-
 	  If OP-TEE is present and running StandAloneMM, dispatch all UEFI
 	  variable related operations to that. The application will verify,
 	  authenticate and store the variables on an RPMB.
 
-	  When ARM_FFA_TRANSPORT is used, dispatch all UEFI variable related
-	  operations to the MM SP running in the secure world.
-	  A door bell mechanism is used to notify the SP when there is data in the shared
-	  MM buffer. The data is copied by u-boot to the shared buffer before issuing
-	  the door bell event.
-
-config FFA_SHARED_MM_BUF_SIZE
-	int "Memory size of the shared MM communication buffer"
-	default 0
-	depends on EFI_MM_COMM_TEE
-	help
-	  This defines the size in bytes of the memory area reserved for the shared
-	  buffer used for communication between the MM feature in U-Boot and
-	  the MM SP in secure world.
-	  The size of the memory region must be a multiple of the size of the maximum
-	  translation granule size that is specified in the ID_AA64MMFR0_EL1 System register.
-	  It is assumed that the MM SP knows the size of the shared MM communication buffer.
-
-config FFA_SHARED_MM_BUF_OFFSET
-	int "Data offset in the shared MM communication buffer"
-	default 0
-	depends on EFI_MM_COMM_TEE
-	help
-	  This defines the offset in bytes of the data read or written to in the shared
-	  buffer by the MM SP.
-
-config FFA_SHARED_MM_BUF_ADDR
-	hex "Define the address of the shared MM communication buffer"
-	default 0x0
-	depends on EFI_MM_COMM_TEE
-	help
-	  This defines the address of the shared MM communication buffer
-	  used for communication between the MM feature in U-Boot and
-	  the MM SP in secure world.
-	  It is assumed that the MM SP knows the address of the shared MM communication buffer.
-
 config EFI_VARIABLE_NO_STORE
 	bool "Don't persist non-volatile UEFI variables"
 	help