seminaries/qtrvsim/hazards-from-lecture: examples from lecture 5 pipeline.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>

seminaries/qtrvsim/hazards-from-lecture/alu-hazards.S

+	li   s1, 0x11111111
+	li   s2, 0x22222222
+	li   s3, 0x33333333
+	li   s4, 0x44444444
+	li   s5, 0x55555555
+
+	add  s0, s2, s3
+	and  t0, s0, s1
+	or   t1, s4, s0
+	sub  t2, s0, s5

seminaries/qtrvsim/hazards-from-lecture/beq-hazards.S

+	li   s1, 0x11111111
+	li   s2, 0x22222222
+	li   s3, 0x33333333
+	li   s4, 0x44444444
+	li   s5, 0x55555555
+	addi t1, zero, 0x123
+	addi t2, zero, 0x123
+
+	beq  t1, t2, skip
+	and  t0, s0, s1
+	or   t1, s4, s0
+	sub  t2, s0, s5
+
+skip:
+	slt  t3, s2, s3

seminaries/qtrvsim/hazards-from-lecture/lw-hazards.S

+	li   s1, 0x11111111
+	li   s2, 0x22222222
+	li   s3, 0x33333333
+	li   s4, 0x44444444
+	li   s5, 0x55555555
+
+	lw   s0, 40(0)
+	and  t0, s0, s1
+	or   t1, s4, s0
+	sub  t2, s0, s5
+
+.org 40
+	.word 0x12345678