Add bdm hdd support #1909

Job	Run time
build-lang	34s
build	1m 6s
build-debug (iopcore_debug, :main)	1m 13s
build-debug (ingame_debug, :main)	1m 14s
build-variants (EXTRA_FEATURES=0, PADEMU=0)	1m 8s
build-debug (eesio_debug, :main)	1m 8s
build-debug (iopcore_ppctty_debug, :main)	1m 16s
build-variants (EXTRA_FEATURES=0, PADEMU=1)	1m 12s
build-variants (EXTRA_FEATURES=1, PADEMU=0)	1m 3s
build-debug (ingame_ppctty_debug, :main)	1m 11s
build-variants (EXTRA_FEATURES=1, PADEMU=1)	1m 6s
build-debug (DTL_T10000=1, :main)	1m 8s
merge-debug	5s
merge-variants	5s
release	0s
	13m 29s

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