ltq-adsl-mei: fix 'inline' declaration warning

ltq-adsl-mei: fix 'inline' declaration warning

Adjust the 'inline' declaration order to fix the build warning:

/home/db/owrt/build_dir/target-mips_24kc_musl/linux-lantiq_xway/ltq-adsl-mei-danube/ltq-adsl-mei/drv_mei_cpe.c:188:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration]
  188 | static void inline MEI_MASK_AND_ACK_IRQ(int x)
      | ^~~~~~

Signed-off-by: Shiji Yang <[email protected]>
fix inline declaration warning

Signed-off-by: Shiji Yang <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/18744
Signed-off-by: Robert Marko <[email protected]>