Enable measurements for Intel TDX

In the scope of enabling the TDX on 24.04, remote attestation feature of TDX needs measurements to be enabled in the firmware.

Right now, the feature is disable (CC_MEASUREMENT_ENABLE=FALSE) by default, we would like to have it enabled.

Here is an snippet example on how to do it:

diff --git a/debian/rules b/debian/rules
index 116c9c74b7..89b20259e2 100755
--- a/debian/rules
+++ b/debian/rules
@@ -30,6 +30,7 @@ COMMON_FLAGS = -DNETWORK_HTTP_BOOT_ENABLE=TRUE
 COMMON_FLAGS += -DNETWORK_IP6_ENABLE=TRUE
 COMMON_FLAGS += -DNETWORK_TLS_ENABLE
 COMMON_FLAGS += -DSECURE_BOOT_ENABLE=TRUE
+COMMON_FLAGS += -DCC_MEASUREMENT_ENABLE=TRUE
 COMMON_FLAGS += $(PCD_FLAGS)
 OVMF_COMMON_FLAGS = $(COMMON_FLAGS)
 OVMF_COMMON_FLAGS += -DTPM2_ENABLE=TRUE

The firmware with this change has been tested and did not show any regression. The test cases can be found here : https://github.com/intel/tdx/wiki/Tests