kernel: add missing config symbols for 5.15

When I enabled CONFIG_HOTPLUG_PCI for mvebu platform, it was asking for
more symbols.

Fixes:
Support for PCI Hotplug (HOTPLUG_PCI) [Y/?] y
  CompactPCI Hotplug driver (HOTPLUG_PCI_CPCI) [N/y/?] n
  SHPC PCI Hotplug driver (HOTPLUG_PCI_SHPC) [N/y/?] (NEW)

Signed-off-by: Josef Schlehofer <[email protected]>

target/linux/generic/config-5.15

@@ -2401,6 +2401,11 @@ CONFIG_HIGH_RES_TIMERS=y
 # CONFIG_HOSTAP_PLX is not set
 # CONFIG_HOTPLUG_CPU is not set
 # CONFIG_HOTPLUG_PCI is not set
+# CONFIG_HOTPLUG_PCI_ACPI_IBM is not set
+# CONFIG_HOTPLUG_PCI_COMPAQ is not set
+# CONFIG_HOTPLUG_PCI_CPCI is not set
+# CONFIG_HOTPLUG_PCI_IBM is not set
+# CONFIG_HOTPLUG_PCI_SHPC is not set
 # CONFIG_HP03 is not set
 # CONFIG_HP100 is not set
 # CONFIG_HP206C is not set