efivarfs: Remove unused internal struct members

The structure was moved to the efivarfs internals in commit 2d82e62
("efi: vars: Move efivar caching layer into efivarfs") after previously
being used as the data ABI for efivars until its removal in commit
0f5b2c6 ("efi: vars: Remove deprecated 'efivars' sysfs interface").

As efivarfs only uses the structure for the variable name caching layer,
the data-related members were never in use. Remove them to avoid
implying that efivarfs is bound by the same restrictions that efivars
once had. While at it, remove the packed attribute, since we no longer
have to guarantee a stable layout.

Signed-off-by: Tim Schumacher <timschumi@gmx.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

Author: timschumi

fs/efivarfs/internal.h

@@ -24,11 +24,8 @@ struct efivarfs_fs_info {
 struct efi_variable {
 	efi_char16_t  VariableName[EFI_VAR_NAME_LEN/sizeof(efi_char16_t)];
 	efi_guid_t    VendorGuid;
-	unsigned long DataSize;
-	__u8          Data[1024];
-	efi_status_t  Status;
 	__u32         Attributes;
-} __attribute__((packed));
+};
 
 struct efivar_entry {
 	struct efi_variable var;