From 936b32643cb03dcb34ef5dab81970229b1cc2a33 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexander.deucher@amd.com>
Date: Tue, 12 Nov 2013 12:31:54 -0500
Subject: [PATCH] drm/radeon: cypress_dpm: Fix unused variable warning when
 CONFIG_ACPI=n

With CONFIG_ACPI=n the following build warning is seen:

drivers/gpu/drm/radeon/cypress_dpm.c:302:31: warning: unused variable 'eg_pi' [-Wunused-variable]

Protect eg_pi with CONFIG_ACPI.

Based on patch from: Fabio Estevam <fabio.estevam@freescale.com>
but doesn't mix allocation and code.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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