Adjust includes in various places.

tools/legacy/sample_encode/src/sample_encode.cpp:1677:52: error: no member named 'ceil' in namespace 'std'
        pParams->nBitRateMultiplier = (mfxU16)std::ceil(static_cast<double>(maxVal) / mfxU16Limit);
                                              ~~~~~^
tools/legacy/sample_multi_transcode/src/pipeline_transcode.cpp:3943:55: error: no member named 'ceil' in namespace 'std'
        mfxU32 framesForEncode = std::min(mfxU32(std::ceil(m_MaxFramesForTranscode / frcFactor)),
                                                 ~~~~~^
tools/legacy/sample_multi_transcode/src/transcode_utils.cpp:2894:26: error: no member named 'ceil' in namespace 'std'
            (mfxU16)std::ceil(static_cast<double>(maxVal) / mfxU16Limit);
                    ~~~~~^

--- tools/legacy/sample_encode/src/sample_encode.cpp.orig	2021-12-07 00:05:44 UTC
+++ tools/legacy/sample_encode/src/sample_encode.cpp
@@ -8,6 +8,7 @@
 #include "vpl_implementation_loader.h"
 
 #include <stdarg.h>
+#include <cmath>
 #include <memory>
 #include <string>
 #include "pipeline_encode.h"
--- tools/legacy/sample_multi_transcode/src/pipeline_transcode.cpp.orig	2021-12-07 00:05:44 UTC
+++ tools/legacy/sample_multi_transcode/src/pipeline_transcode.cpp
@@ -12,6 +12,7 @@
 
 #include <assert.h>
 #include <algorithm>
+#include <cmath>
 #include <cstring>
 #include <set>
 #include "mfx_itt_trace.h"
--- tools/legacy/sample_multi_transcode/src/transcode_utils.cpp.orig	2021-12-07 00:05:44 UTC
+++ tools/legacy/sample_multi_transcode/src/transcode_utils.cpp
@@ -27,6 +27,7 @@
 
 #include <algorithm>
 #include <cctype>
+#include <cmath>
 #include <cstdlib>
 #include <cstring>
 #include <fstream>