[PATCH v4] staging: unisys: visorbus: Constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by work with const attribute_group. So mark the non-const structs as const. Signed-off-by: Arvind Yadav --- Changes in v2: Change log typo was not

[PATCH v4] staging: unisys: visorbus: Constify attribute_group structures.

attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by work with const attribute_group. So mark the non-const structs as const. Signed-off-by: Arvind Yadav --- Changes in v2: Change log typo was not correct. Changes in v3: