aom: cmake: rm subtract*.c w/CONFIG_AV1_ENCODER=0

SDL Commits
1 
From 869ca4eb6dcd6f22777c1d9a765582cbe57a3602 Mon Sep 17 00:00:00 2001
From: James Zern <[EMAIL REDACTED]>
Date: Tue, 18 Jun 2024 15:53:58 -0700
Subject: [PATCH] cmake: rm subtract*.c w/CONFIG_AV1_ENCODER=0

Fixes a -Wmissing-prototypes warning.

Bug: aomedia:3416
Change-Id: Ic1975d2efc104d48a638e606f1cfc32c2d0e1a60
---
 aom_dsp/aom_dsp.cmake | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/aom_dsp/aom_dsp.cmake b/aom_dsp/aom_dsp.cmake
index 1cf4a2efe..ff1c6de4a 100644
--- a/aom_dsp/aom_dsp.cmake
+++ b/aom_dsp/aom_dsp.cmake
@@ -45,7 +45,6 @@ list(APPEND AOM_DSP_COMMON_SOURCES
             "${AOM_ROOT}/aom_dsp/simd/v256_intrinsics_c.h"
             "${AOM_ROOT}/aom_dsp/simd/v64_intrinsics.h"
             "${AOM_ROOT}/aom_dsp/simd/v64_intrinsics_c.h"
-            "${AOM_ROOT}/aom_dsp/subtract.c"
             "${AOM_ROOT}/aom_dsp/txfm_common.h"
             "${AOM_ROOT}/aom_dsp/x86/convolve_common_intrin.h")
 
@@ -113,7 +112,6 @@ list(APPEND AOM_DSP_COMMON_INTRIN_NEON
             "${AOM_ROOT}/aom_dsp/arm/fwd_txfm_neon.c"
             "${AOM_ROOT}/aom_dsp/arm/loopfilter_neon.c"
             "${AOM_ROOT}/aom_dsp/arm/intrapred_neon.c"
-            "${AOM_ROOT}/aom_dsp/arm/subtract_neon.c"
             "${AOM_ROOT}/aom_dsp/arm/blend_a64_mask_neon.c"
             "${AOM_ROOT}/aom_dsp/arm/avg_pred_neon.c")
 
@@ -181,6 +179,7 @@ if(CONFIG_AV1_ENCODER)
               "${AOM_ROOT}/aom_dsp/quantize.h"
               "${AOM_ROOT}/aom_dsp/sad.c"
               "${AOM_ROOT}/aom_dsp/sad_av1.c"
+              "${AOM_ROOT}/aom_dsp/subtract.c"
               "${AOM_ROOT}/aom_dsp/sse.c"
               "${AOM_ROOT}/aom_dsp/ssim.c"
               "${AOM_ROOT}/aom_dsp/ssim.h"
@@ -291,6 +290,7 @@ if(CONFIG_AV1_ENCODER)
               "${AOM_ROOT}/aom_dsp/arm/obmc_variance_neon.c"
               "${AOM_ROOT}/aom_dsp/arm/obmc_sad_neon.c"
               "${AOM_ROOT}/aom_dsp/arm/sse_neon.c"
+              "${AOM_ROOT}/aom_dsp/arm/subtract_neon.c"
               "${AOM_ROOT}/aom_dsp/arm/sum_squares_neon.c"
               "${AOM_ROOT}/aom_dsp/arm/blk_sse_sum_neon.c")