gas: bpf: new test for MOV with C-like numbers ll suffix

gas: bpf: new test for MOV with C-like numbers ll suffix

The BPF pseudo-c syntax supports both MOV and LDDW instructions:

    mov:  r1 = EXPR
    lddw: r1 = EXPR ll

Note that the white space between EXPR and `ll' is necessary in order
to avoid ambiguity with the assembler's support for C-like numerical
suffixes.  This patch adds a new test to the GAS BPF testsuite to make
sure that instructions like:

    r1 = 666ll

are interpreted as `mov %r1,666', not as `lddw %r1,666'.

This matches clang's assembler behavior.

2023-10-30  Jose E. Marchesi  <jose.marchesi@oracle.com>

	* testsuite/gas/bpf/alu-pseudoc.s: Add test to make sure C-like
	suffix `ll' is not interpreted as lddw syntax.
	* testsuite/gas/bpf/alu-pseudoc.d: Update expected results.
	* testsuite/gas/bpf/alu-be-pseudoc.d: Likewise.