hos/mtc: Add FSP WAR and boost HOS booting times

By implementing FSP WAR we can allow HOS to boot in 1600MHz and be able to switch frequency without hanging.

bootloader/main.c

@@ -1265,7 +1265,6 @@ void ipl_main()
 
 	// Train DRAM and switch to max frequency.
 	minerva_init();
-	minerva_change_freq(FREQ_1600);
 
 	display_init();