glk-edk2: Disable -Wmisleading-indentation

Disable -Wmisleading-indentation warning to unblock llvm-next
builds.

BUG=chromium:1048724
TEST=`emerge-octopus intel-glkfsp` with llvm-next passed

Change-Id: I410e5761506f3a51143d91c1413e213dae4e6346
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/edk2/+/2037900
Reviewed-by: Caroline Tice <cmtice@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Tested-by: Denis Nikitin <denik@chromium.org>
Commit-Queue: Denis Nikitin <denik@chromium.org>
diff --git a/BaseTools/Source/C/Makefiles/header.makefile b/BaseTools/Source/C/Makefiles/header.makefile
index 27aa28b..050fe8e 100644
--- a/BaseTools/Source/C/Makefiles/header.makefile
+++ b/BaseTools/Source/C/Makefiles/header.makefile
@@ -49,7 +49,7 @@
 # assume clang or clang compatible flags on OS X

 BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-self-assign -Wno-unused-result -nostdlib -c -g

 else

-BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-unused-result -nostdlib -c -g

+BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-unused-result -Wno-misleading-indentation -nostdlib -c -g

 endif

 BUILD_LFLAGS =

 BUILD_CXXFLAGS = -Wno-unused-result