libplatsupport: separate drivers from platforms #238

Job	Run time
HW Build (armv7a, gcc)	23m 42s
HW Build (armv7a, clang)	31m 58s
HW Build (armv8a, gcc)	1h 0m 50s
HW Build (armv8a, clang)	58m 30s
HW Build (nehalem, gcc)	9m 6s
HW Build (nehalem, clang)	14m 25s
HW Build (rv64imac, gcc)	8m 27s
Matrix	11s
HW Run (ZYNQMP106, armv8a, gcc)	35m 55s
HW Run (ZYNQMP106, armv8a, clang)	41m 46s
HW Run (IMX8MQ_EVK, armv8a, gcc)	37m 5s
HW Run (IMX8MQ_EVK, armv8a, clang)	31m 3s
HW Run (OMAP3, armv7a, gcc)	34m 43s
HW Run (OMAP3, armv7a, clang)	28m 41s
HW Run (ODROID_C4, armv8a, gcc)	55m 37s
HW Run (ODROID_C4, armv8a, clang)	43m 56s
HW Run (IMX8MM_EVK, armv8a, gcc)	43m 50s
HW Run (IMX8MM_EVK, armv8a, clang)	50m 0s
HW Run (AM335X_BONEBLACK, armv8a, gcc)	30m 31s
HW Run (AM335X_BONEBLACK, armv8a, clang)	25m 28s
HW Run (ODROID_C2, armv8a, gcc)	18m 47s
HW Run (ODROID_C2, armv8a, clang)	16m 49s
HW Run (ODROID_XU4, armv7a, gcc)	57m 5s
HW Run (ODROID_XU4, armv7a, clang)	1h 1m 21s
HW Run (TX1, armv8a, gcc)	1h 24m 26s
HW Run (TX1, armv8a, clang)	24s
HW Run (ZYNQMP, armv8a, gcc)	40m 24s
HW Run (ZYNQMP, armv8a, clang)	38m 3s
HW Run (SABRE, armv7a, gcc)	21m 20s
HW Run (SABRE, armv7a, clang)	21m 54s
HW Run (TK1, armv7a, gcc)	45m 10s
HW Run (TK1, armv7a, clang)	42m 48s
HW Run (TX2, armv8a, gcc)	1h 22m 44s
HW Run (TX2, armv8a, clang)	1h 4m 52s
HW Run (PC99, nehalem, gcc, 32)	32m 24s
HW Run (PC99, nehalem, clang, 32)	27m 56s
HW Run (PC99, nehalem, gcc, 64)	28m 39s
HW Run (PC99, nehalem, clang, 64)	28m 16s
HW Run (HIFIVE, rv64imac, gcc)	47m 56s
	23h 47m 2s

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