[source] x86: Fix xen serial console by removing conflicting PATA driver

[LEDE Commits]

nbd pushed a commit to source.git, branch lede-17.01:
https://git.lede-project.org/da0219ed9f990e5a951197c2c9c6a916d17109d1

commit da0219ed9f990e5a951197c2c9c6a916d17109d1
Author: Baptiste Jonglez <git at bitsofnetworks.org>
AuthorDate: Sat Jul 15 22:57:54 2017 +0200

    x86: Fix xen serial console by removing conflicting PATA driver
    
    The Xen serial console has been broken since the xen_domu subtarget
    was merged in the generic x86 subtarget (commits 296772f9 and b36e24f3).
    
    The reason for the broken serial console seems to be an IRQ conflict
    between the serial console driver and the PATA_LEGACY driver:
    
    [    1.330125] genirq: Flags mismatch irq 8. 00000000 (hvc_console) vs. 00000000 (platform[pata_legacy.4])
    [    1.330134] hvc_open: request_irq failed with rc -16.
    [    1.330148] Warning: unable to open an initial console.
    
    Just drop the PATA_LEGACY driver from the x86/generic and x86_64
    subtargets, since this driver is marked experimental and only supports
    very old ISA devices anyway.  It is still included in the x86/legacy
    subtarget where it rightfully belongs.
    
    Fixes: FS#787
    
    Signed-off-by: Baptiste Jonglez <git at bitsofnetworks.org>
---
 target/linux/x86/64/config-default      | 1 -
 target/linux/x86/generic/config-default | 1 -
 2 files changed, 2 deletions(-)

diff --git a/target/linux/x86/64/config-default b/target/linux/x86/64/config-default
index 848f041..9948c28 100644
--- a/target/linux/x86/64/config-default
+++ b/target/linux/x86/64/config-default
@@ -204,7 +204,6 @@ CONFIG_PARAVIRT_SPINLOCKS=y
 # CONFIG_PARAVIRT_TIME_ACCOUNTING is not set
 CONFIG_PATA_AMD=y
 CONFIG_PATA_ATIIXP=y
-CONFIG_PATA_LEGACY=y
 CONFIG_PATA_MPIIX=y
 CONFIG_PATA_OLDPIIX=y
 CONFIG_PATA_PLATFORM=y
diff --git a/target/linux/x86/generic/config-default b/target/linux/x86/generic/config-default
index c4ca4fd..a0472f3 100644
--- a/target/linux/x86/generic/config-default
+++ b/target/linux/x86/generic/config-default
@@ -260,7 +260,6 @@ CONFIG_PARAVIRT_SPINLOCKS=y
 # CONFIG_PARAVIRT_TIME_ACCOUNTING is not set
 CONFIG_PATA_AMD=y
 CONFIG_PATA_ATIIXP=y
-CONFIG_PATA_LEGACY=y
 CONFIG_PATA_MPIIX=y
 CONFIG_PATA_OLDPIIX=y
 CONFIG_PATA_PLATFORM=y