Platforms/ARM/Juno: add PLATFORM_FLAGS rather than override them

The ArmJuno.dsc [BuildOptions] section adds some include paths to the
compiler flags, by overriding the PLATFORM_FLAGS build variable of all
build types, toolchains and architectures, using an == assignment.

Since some of PLATFORM_FLAGS variants may contain compiler switches that
we may want to keep, using = to add rather than replace is more appropriate
here.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>
diff --git a/Platforms/ARM/Juno/ArmJuno.dsc b/Platforms/ARM/Juno/ArmJuno.dsc
index 182aa55..154de2c 100644
--- a/Platforms/ARM/Juno/ArmJuno.dsc
+++ b/Platforms/ARM/Juno/ArmJuno.dsc
@@ -67,7 +67,7 @@
   PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf

 

 [BuildOptions]

-  *_*_*_PLATFORM_FLAGS == -I$(WORKSPACE)/ArmPlatformPkg/ArmVExpressPkg/Include -I$(WORKSPACE)/ArmPlatformPkg/ArmJunoPkg/Include

+  *_*_*_PLATFORM_FLAGS = -I$(WORKSPACE)/ArmPlatformPkg/ArmVExpressPkg/Include -I$(WORKSPACE)/ArmPlatformPkg/ArmJunoPkg/Include

 

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