mailbox: qcom-apcs-ipc: Add compatible for MSM8976 SoC

MSM8976 APCS block is similar to one found in MSM8994.
Signed-off-by: NAdam Skladowski <a39.skl@gmail.com>
Signed-off-by: NJassi Brar <jaswinder.singh@linaro.org>

drivers/mailbox/qcom-apcs-ipc-mailbox.c

@@ -146,6 +146,7 @@ static const struct of_device_id qcom_apcs_ipc_of_match[] = {
 	{ .compatible = "qcom,msm8916-apcs-kpss-global", .data = &msm8916_apcs_data },
 	{ .compatible = "qcom,msm8939-apcs-kpss-global", .data = &msm8916_apcs_data },
 	{ .compatible = "qcom,msm8953-apcs-kpss-global", .data = &msm8994_apcs_data },
+	{ .compatible = "qcom,msm8976-apcs-kpss-global", .data = &msm8994_apcs_data },
 	{ .compatible = "qcom,msm8994-apcs-kpss-global", .data = &msm8994_apcs_data },
 	{ .compatible = "qcom,msm8996-apcs-hmss-global", .data = &msm8996_apcs_data },
 	{ .compatible = "qcom,msm8998-apcs-hmss-global", .data = &msm8994_apcs_data },