net: dsa: yt921x: Use *_ULL bitfield macros for VLAN_CTRL

net: dsa: yt921x: Use *_ULL bitfield macros for VLAN_CTRL

VLAN_CTRL should be treated as a 64-bit register. GENMASK and BIT
macros use unsigned long as the underlying type, which will result in a
build error on architectures where sizeof(long) == 4.

Replace them with unsigned long long variants.

Signed-off-by: David Yang <mmyangfl@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20251201094232.3155105-2-mmyangfl@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>