Change in coreboot[master]: qemu-q35: Use the TSC for udelay

[Philipp Deppenwiese (Code Review)]

Philipp Deppenwiese has submitted this change and it was merged. ( https://review.coreboot.org/28526 )

Change subject: qemu-q35: Use the TSC for udelay
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qemu-q35: Use the TSC for udelay

Use the TSC for delays on q35, ensuring that the TSC delay code is
included in the correct stages when selected.

Tested on qemu-35 and wedge-100s (for no regressions).

Change-Id: I3f8368509807974bfcf2a0fcff7a4aa21adf47ed
Signed-off-by: Michael van der Westhuizen 
Reviewed-on: https://review.coreboot.org/28526
Tested-by: build bot (Jenkins) 
Reviewed-by: Paul Menzel 
Reviewed-by: Patrick Rudolph 
Reviewed-by: Philipp Deppenwiese 
---
M src/cpu/qemu-x86/Kconfig
M src/cpu/qemu-x86/Makefile.inc
2 files changed, 2 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Paul Menzel: Looks good to me, but someone else must approve
  Philipp Deppenwiese: Looks good to me, approved
  Patrick Rudolph: Looks good to me, approved

diff --git a/src/cpu/qemu-x86/Kconfig b/src/cpu/qemu-x86/Kconfig
index ea2bc46..ab8e1a9 100644
--- a/src/cpu/qemu-x86/Kconfig
+++ b/src/cpu/qemu-x86/Kconfig
@@ -20,3 +20,4 @@
    select ARCH_ROMSTAGE_X86_32
    select ARCH_RAMSTAGE_X86_32
    select SMP
+	select UDELAY_TSC
diff --git a/src/cpu/qemu-x86/Makefile.inc b/src/cpu/qemu-x86/Makefile.inc
index b5f8369..288eea6 100644
--- a/src/cpu/qemu-x86/Makefile.inc
+++ b/src/cpu/qemu-x86/Makefile.inc
@@ -16,3 +16,4 @@
 subdirs-y += ../x86/mtrr
 subdirs-y += ../x86/lapic
 subdirs-y += ../x86/smm
+subdirs-y += ../x86/tsc