int10: wrap entire V_ADDR_R* macros in parens for safer expansion

Resolves warnings from Oracle Parfait static analyser:

Error: Misleading macro
   Misleading macro [misleading-macro]:
      misleading evaluation of ternary '?:' operator in expansion of macro V_ADDR_RB due to missing parentheses
        at line 392 of hw/xfree86/int10/generic.c.
        '|' operator has higher precedence than ternary '?:' operator inside macro body at line 431
        low precedence ternary '?:' operator is hidden by expansion of macro V_ADDR_RB at line 431
   Misleading macro [misleading-macro]:
      misleading evaluation of ternary '?:' operator in expansion of macro V_ADDR_RB due to missing parentheses
        at line 392 of hw/xfree86/int10/generic.c.
        '<<' operator has higher precedence than ternary '?:' operator inside macro body at line 431
        low precedence ternary '?:' operator is hidden by expansion of macro V_ADDR_RB at line 431
   Misleading macro [misleading-macro]:
      misleading evaluation of ternary '?:' operator in expansion of macro V_ADDR_RB due to missing parentheses
        at line 392 of hw/xfree86/int10/generic.c.
        '<<' operator has higher precedence than ternary '?:' operator inside macro body at line 442
        low precedence ternary '?:' operator is hidden by expansion of macro V_ADDR_RB at line 442
   Misleading macro [misleading-macro]:
      misleading evaluation of ternary '?:' operator in expansion of macro V_ADDR_RB due to missing parentheses
        at line 392 of hw/xfree86/int10/generic.c.
        '<<' operator has higher precedence than ternary '?:' operator inside macro body at line 443
        low precedence ternary '?:' operator is hidden by expansion of macro V_ADDR_RB at line 443
   Misleading macro [misleading-macro]:
      misleading evaluation of ternary '?:' operator in expansion of macro V_ADDR_RB due to missing parentheses
        at line 392 of hw/xfree86/int10/generic.c.
        '|' operator has higher precedence than ternary '?:' operator inside macro body at line 443
        low precedence ternary '?:' operator is hidden by expansion of macro V_ADDR_RB at line 441
   Misleading macro [misleading-macro]:
      misleading evaluation of ternary '?:' operator in expansion of macro V_ADDR_RB due to missing parentheses
        at line 392 of hw/xfree86/int10/generic.c.
        '<<' operator has higher precedence than ternary '?:' operator inside macro body at line 443
        low precedence ternary '?:' operator is hidden by expansion of macro V_ADDR_RB at line 443

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
4 jobs for parfait-fixes in 9 minutes and 39 seconds