x86: IOSF: Add loadable module support

From: "David E. Box" <[email protected]>

This patch series adds missing functionalty that mostly affected loadable modules.

The first patch adds dummy functions to allow drivers not completely dependant on the IOSF MBI driver to compile on systems that don't have it.

The second makes MBI driver built in.

Changes from V4:

- Put back Kconfig prompt for IOSF_MBI.

Changes from V3:

- Code is agreed to be small enough to not warrant forcing for non-EXPERT only

Changes from V2:

- Remove non linux style externs from iosf_mbi.h

Changes from V1:

- Force default y for non-EXPERT to allow easier custom configuration as suggested by hpa <[email protected]>
- Add WARN() to dummy functions, other than iosf_mbi_available(), to signal incorrect use as suggested by Alan <[email protected]> Also return EPERM in these functions
- Splits single patch into two patch series

David E. Box (2):
x86: IOSF: add dummy functions for loadable modules
x86: IOSF: Change IOSF_MBI Kconfig to default y

 arch/x86/Kconfig                |    7 ++-----
 arch/x86/include/asm/iosf_mbi.h |   33 +++++++++++++++++++++++++++++++++
 arch/x86/kernel/iosf_mbi.c      |    6 ++++++
 3 files changed, 41 insertions(+), 5 deletions(-)

1.7.10.4