drm/amd/display: Fix index may exceed array range within fpu_update_bw_bounding_box

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/amd/display/dc/dml/dcn302/dcn302_fpu.c",
                        "drivers/gpu/drm/amd/display/dc/dml/dcn303/dcn303_fpu.c",
                        "drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c",
                        "drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c"
                    ],
                    "versions": [
                        {
                            "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
                            "lessThan": "6d8685dd9718e0613f7c64253500874021b9efc9",
                            "status": "affected",
                            "versionType": "git"
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                        {
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                        {
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                        {
                            "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
                            "lessThan": "188fd1616ec43033cedbe343b6579e9921e2d898",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                }

{
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/amd/display/dc/dml/dcn302/dcn302_fpu.c",
                        "drivers/gpu/drm/amd/display/dc/dml/dcn303/dcn303_fpu.c",
                        "drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c",
                        "drivers/gpu/drm/amd/display/dc/dml/dcn321/dcn321_fpu.c"
                    ],
                    "versions": [
                        {
                            "version": "4.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.191",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.50",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.10.9",
                            "lessThanOrEqual": "6.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.11",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }