vboot: Add firmware management parameters

This adds RW firmware support for the optional firmware management
parameters TPM space.

System-level tests require CL:339262 to add cryptohome support.

BUG=chromium:601492
BRANCH=baytrail and newer platforms
TEST=make -j runtests
     Or better, COV=1 make, and then make sure all new code is covered.

Change-Id: Ifaf644c80809552d5961615be6017c2a332a034b
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/339234

firmware/lib/include/load_kernel_fw.h

@@ -22,6 +22,8 @@
 /* GPT is external */
 #define BOOT_FLAG_EXTERNAL_GPT (0x04ULL)
 
+struct RollbackSpaceFwmp;
+
 typedef struct LoadKernelParams {
 	/* Inputs to LoadKernel() */
 	/*
@@ -57,6 +59,8 @@ typedef struct LoadKernelParams {
 	 * VbNvSetup() and VbNvTeardown() on the context.
 	 */
 	VbNvContext *nv_context;
+	/* Firmware management parameters; may be NULL if not present. */
+	const struct RollbackSpaceFwmp *fwmp;
 
 	/*
 	 * Outputs from LoadKernel(); valid only if LoadKernel() returns