pcie: msi: add missing mem_manage.h include for MSI-X
pcie: msi: add missing mem_manage.h include for MSI-X

When building on non-X86 platforms K_MEM_PERM_RW gets undefined.

Fixes: a2491b321e ("drivers/pcie: Add support for MSI-X")
Signed-off-by: Neil Armstrong <619b324efbf5f7848de055bdc8bef4c0dd7c8ef5@baylibre.com>

finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr