nb/intel/pineview: Extract HPET setup and delay function

To allow other platforms to reuse this code, extract it into a separate
compilation unit. Since HPET is enabled through the southbridge, place
the code in the southbridge scope. Finally, select the newly-added
Kconfig option from i82801gx and replace lpc.c `enable_hpet` function.

Change-Id: I7a28cc4d12c6d79cd8ec45dfc8100f15e6eac303
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49365
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
diff --git a/src/southbridge/intel/common/Kconfig b/src/southbridge/intel/common/Kconfig
index 3030d25..a14513d 100644
--- a/src/southbridge/intel/common/Kconfig
+++ b/src/southbridge/intel/common/Kconfig
@@ -15,6 +15,9 @@
 config SOUTHBRIDGE_INTEL_COMMON_GPIO
 	def_bool n
 
+config SOUTHBRIDGE_INTEL_COMMON_HPET
+	def_bool n
+
 config SOUTHBRIDGE_INTEL_COMMON_EARLY_SMBUS
 	def_bool n