AMD f14 vendorcode: Fix warning

Add brackets around initializer in #define for
PCIE_DDI_DATA_INITIALIZER to fix the warning:
  PlatformGnbPcie.c:89, GNU Compiler 4 (gcc), Priority: Normal
  missing braces around initializer [-Wmissing-braces]

This warning happens for Inagua and South Station

Change-Id: I7d8f742dd8335b704b0493aa6e9eaebc3cc50b1e
Signed-off-by: Martin Roth <martin.roth@se-eng.com>
Reviewed-on: http://review.coreboot.org/2495
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
diff --git a/src/vendorcode/amd/agesa/f14/AGESA.h b/src/vendorcode/amd/agesa/f14/AGESA.h
index 5eaa638..3333976 100644
--- a/src/vendorcode/amd/agesa/f14/AGESA.h
+++ b/src/vendorcode/amd/agesa/f14/AGESA.h
@@ -813,7 +813,7 @@
 #define  PCIE_PORT_DATA_INITIALIZER(mPortPresent, mChannelType, mDevAddress, mHotplug, mMaxLinkSpeed, mMaxLinkCap, mAspm, mResetId) \
 {mPortPresent, mChannelType, mDevAddress, 0, mMaxLinkSpeed, mAspm, mHotplug, mResetId, {0, mMaxLinkCap} }
 #define  PCIE_DDI_DATA_INITIALIZER(mConnectorType, mAuxIndex, mHpdIndex ) \
-{mConnectorType, mAuxIndex, mHpdIndex, {0, 0}}
+{mConnectorType, mAuxIndex, mHpdIndex, {{0}, {0}}}
 #define  PCIE_DDI_DATA_INITIALIZER_V1(mConnectorType, mAuxIndex, mHpdIndex, mMapping0, mMapping1) \
 {mConnectorType, mAuxIndex, mHpdIndex, {mMapping0, mMapping1}}