coverity: Broadcom Stingray platform i2c driver

Add a build configuraiton to include coverage for brcm i2c
driver.

Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
Change-Id: I22d8b2fee90d60f3a1a16cfbc6e5783ce42781f3
diff --git a/script/tf-coverity/tf-cov-make b/script/tf-coverity/tf-cov-make
index 4389384..3c4102d 100755
--- a/script/tf-coverity/tf-cov-make
+++ b/script/tf-coverity/tf-cov-make
@@ -345,7 +345,7 @@
 make PLAT=agilex $(common_flags) all
 
 # Platforms from Broadcom
-clean_build PLAT=stingray $(common_flags) BOARD_CFG=bcm958742t INCLUDE_EMMC_DRIVER_ERASE_CODE=1
+clean_build PLAT=stingray $(common_flags) BOARD_CFG=bcm958742t INCLUDE_EMMC_DRIVER_ERASE_CODE=1 DRIVER_I2C_ENABLE=1
 clean_build PLAT=stingray $(common_flags) BOARD_CFG=bcm958742t-ns3 INCLUDE_EMMC_DRIVER_ERASE_CODE=1
 
 # Platforms from Marvell