lpm_decode output

The lpm_decode MegaFunction has a std_logic_vector output, but the MegaWizard is generating individual outputs in the instantiation. If you you want std_logic_vector, you should instantiate the MegaFunction directly in your code.

LIBRARY lpm;
USE lpm.all;
-- ....
COMPONENT lpm_decode
GENERIC (
  lpm_decodes : NATURAL;
  lpm_type       : STRING;
  lpm_width     : NATURAL
);
PORT (
  eq   : OUT STD_LOGIC_VECTOR (lpm_decodes-1 DOWNTO 0);
  data : IN STD_LOGIC_VECTOR (3 DOWNTO 0)
);
END COMPONENT;
-- ..
lpm_decode_component : lpm_decode
  GENERIC MAP (
  lpm_decodes => 128,
  lpm_type => "LPM_DECODE",
  lpm_width => 7
)
PORT MAP (
  data => your_inputdata,
  eq => your_decodeddata
);