[source] x86-generic: add MMC support to boot off SD cards

[LEDE Commits]

neoraider pushed a commit to source.git, branch master:
https://git.lede-project.org/40a16fec6a8ddecd022452b1c2052bf08b681687

commit 40a16fec6a8ddecd022452b1c2052bf08b681687
Author: Andreas Ziegler <github at andreas-ziegler.de>
AuthorDate: Tue Nov 15 20:36:27 2016 +0100

    x86-generic: add MMC support to boot off SD cards
    
    MMC support has been added to x86-64 a while ago, there is no reason not
    to support it in x86-generic as well.
    
    Signed-off-by: Andreas Ziegler <github at andreas-ziegler.de>
    [Matthias Schiffer: add commit message]
    Signed-off-by: Matthias Schiffer <mschiffer at universe-factory.net>
---
 target/linux/x86/generic/config-default | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/target/linux/x86/generic/config-default b/target/linux/x86/generic/config-default
index a6d3bb8..bef6069 100644
--- a/target/linux/x86/generic/config-default
+++ b/target/linux/x86/generic/config-default
@@ -205,6 +205,14 @@ CONFIG_MFD_INTEL_LPSS=y
 CONFIG_MFD_INTEL_LPSS_ACPI=y
 # CONFIG_MFD_INTEL_QUARK_I2C_GPIO is not set
 # CONFIG_MIXCOMWD is not set
+CONFIG_MMC=y
+CONFIG_MMC_BLOCK=y
+CONFIG_MMC_RICOH_MMC=y
+CONFIG_MMC_SDHCI=y
+CONFIG_MMC_SDHCI_PCI=y
+# CONFIG_MMC_SDHCI_PLTFM is not set
+# CONFIG_MMC_TIFM_SD is not set
+# CONFIG_MMC_WBSD is not set
 CONFIG_MMU_NOTIFIER=y
 # CONFIG_MOUSE_BCM5974 is not set
 # CONFIG_MOUSE_CYAPA is not set