build(rk3588): add build configs for rk3588

This is needed to support compiling new source file.
Also updated the default tf-a build configs for rk3588.

Signed-off-by: XiaoDong Huang <derrick.huang@rock-chips.com>
Change-Id: I9e4dd355623e26cc4b816ac6a98f0857f4a167e7
diff --git a/script/tf-coverity/tf-cov-make b/script/tf-coverity/tf-cov-make
index 66ee483..7cb46c7 100755
--- a/script/tf-coverity/tf-cov-make
+++ b/script/tf-coverity/tf-cov-make
@@ -415,6 +415,8 @@
     ENABLE_STACK_PROTECTOR=strong all
 make PLAT=rk3328 $(common_flags) COREBOOT=1 PLAT_RK_SECURE_DDR_MINILOADER=1 \
     ENABLE_STACK_PROTECTOR=strong all
+make PLAT=rk3588 $(common_flags) COREBOOT=1 PLAT_RK_SECURE_DDR_MINILOADER=1 \
+    ENABLE_STACK_PROTECTOR=strong all
 make PLAT=px30 $(common_flags) PLAT_RK_SECURE_DDR_MINILOADER=1 \
     ENABLE_STACK_PROTECTOR=strong all