ANDROID: GKI: Update symbol list for BCMSTB

INFO: 6 function symbol(s) added
  'void __read_overflow2_field(size_t, size_t)'
  'int iommu_fwspec_init(struct device*, struct fwnode_handle*, const struct iommu_ops*)'
  'struct pci_host_bridge* pci_find_host_bridge(struct pci_bus*)'
  'long strnlen_user(const char*, long)'
  'int tty_buffer_request_room(struct tty_port*, size_t)'
  'int tty_buffer_set_limit(struct tty_port*, int)'

Bug: 369085303
Change-Id: Ia56882467e3f523ad476db0d237f69ffc4e80084
Signed-off-by: Pierre Couillaud <pierre@broadcom.com>