cbootimage: Add HOSTCC and flags

Add the flags used by the Nvidia makefile and use HOSTCC
to build cbootimage. Note that adding -g makes the BCT
very large, so leave that flag out.

Change-Id: I4431efffdfdcbd030665b26f5b799352e38d1f95
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/8411
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
1 file changed