SPI bus fake enumeration stub

Signed-off-by: Alison Chaiken <alison_chaiken@mentor.com>
I2C bus fake enumeration minimum functionality

Signed-off-by: Alison Chaiken <alison_chaiken@mentor.com>
I2C bus fake enumeration minimum functionality

Signed-off-by: Alison Chaiken <alison_chaiken@mentor.com>